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Math 245 discussion - central tendency and measure of dispersion
# Discussion 1: After Watching Discussion Board Stats Videos (On MyLab Statistics) and doing your own research, discuss y ...
Math 245 discussion - central tendency and measure of dispersion
# Discussion 1: After Watching Discussion Board Stats Videos (On MyLab Statistics) and doing your own research, discuss your understanding of Quartiles, Measure of Dispersion and Standard Deviation. Are Sampling always reliable? Why is standard deviation important, give specific examples to illustrate you understanding. # Discussion 2: After Watching Discussion Board Stats Videos (On MyLab Statistics) and doing your own research, discuss your understanding of average, mean and median. Should averages be taken literally? What are the drawbacks. Has your understanding and perceptions of averages changed? If so how?
PHA 6935 University of Florida Applied Statistics Problems
The use of statistics is often employed to highlight international, national, and state trends in crime and drug abuse.1. ...
PHA 6935 University of Florida Applied Statistics Problems
The use of statistics is often employed to highlight international, national, and state trends in crime and drug abuse.1. Explain the following terms in your own words.1. Box-and-whiskers plot2. Standard deviation3. Normal distribution (9 points)2. A BAC describes the amount of alcohol in a person's blood, expressed as weight of alcohol per unit of volume of blood. For example, 0.08 percent BAC indicates 80 mg of alcohol per 100 ml of blood." (source: http://www.austintexas.gov/faq/what-does-blood-alcohol-concentration-bac-measure (Links to an external site.); please note, you do not require to access the source to answer the question) For the data set below calculate the mean, median, mode and standard deviation. Then, for Blood alcohol levels only, plot: a. Frequency histogram b. Probability (i.e. cumulative frequency) plot What do you conclude about the distribution of the sample?From the data set presented here, would you feel comfortable to say that the age group between 30-39 years exhibits higher BAC counts than other age groups? (16 points)AgeBlood alcohol level (mg/dL)2113456532346521348218362489284543102487852563711248105619533685841319036982710425324754356764625078389236845926418134852854241094296193433276418439139743410141954088In an experiment using three tosses of the same coin, state and apply the general equation that provides the total number of possible outcomes for the experiment and list the outcome string (3 points). Then, for each of the following three scenarios, list the possible outcome string and calculate the probability of the scenario as a decimal number (to three places) showing all working (9 points).The probability of getting three heads when flipping a coin 3 times.The probability of at least getting one head and one tail when flipping a coin 3 times.The probability of getting a head in the first flip, a tail in the second, and a head again in the third flip of a coin.Below is an incomplete contingency table displaying two levels for each the gender and the political party association (13 points).Complete the table with all marginal totals and cell counts.Calculate the following probabilities.For a male to be a Republican.For a voter to be female.For a voter to be either a democrat or a female.For a person to not be a female but voting democratic.Political partyTotalGenderRepublicanDemocratMale8773?Female61??Total??300
Chamberlain College of Nursing Weights of 50 Babies at Birth Research Paper
Required ResourcesRead/review the following resources for this activity:Textbook: Chapter 8LessonScenario/SummaryYou will ...
Chamberlain College of Nursing Weights of 50 Babies at Birth Research Paper
Required ResourcesRead/review the following resources for this activity:Textbook: Chapter 8LessonScenario/SummaryYou will complete a Course Project in this course that will span two weeks. The final project is due the Sunday of Week 7. The project is broken into two parts. You will complete Part I in Week 6 and Part II in Week 7. In Week 6, Confidence Intervals will be explored and in Week 7 Hypothesis testing will be explored.A confidence interval is a defined range of values such that there is a specified probability that the value of a parameter lies within the interval.In Part I of this project, you will pick a topic, complete research and provide a write-up that includes calculations. Round all values to two decimal places when appropriate.DeliverablesChoose a Topic where you can gather at least 50 pieces of data.Examples of TopicsThe Golden Gate Warriors Points Per Game in 2016 (use the points scored in the first 50 games).High School Graduation Rates by State (use the graduation rates for all 50 states)Average Tuition Rates in the US (You have to find the tuition rates of 50 college/universities).The prices of a hotel room per night in a major city (You have to find the price of the same night of hotels in one city).Weights of 50 babies at birth.Write at least a 1-Page ReportOpen a Word DocumentIntroduction--Provide a description of your topic and cite where you found your data.Sample Data—Include a 5x10 table including your 50 values in your report. You must provide ALL of your sample data.Problem Computations—For the topic you chose, you must answer the following:Determine the mean and standard deviation of your sample.Find the 80%, 95%, and 99% confidence intervals.Make sure to list the margin of error for the 80%, 95%, and 99% confidence interval.Create your own confidence interval (you cannot use 80%, 95%, and 99%) and make sure to show your work. Make sure to list the margin of error.Problem Analysis—Write a half-page reflection.What trend do you see takes place to the confidence interval as the confidence level rises? Explain mathematically why that takes place.Provide a sentence for each confidence interval created in part c) which explains what the confidence interval means in context of topic of your project.Explain how Part I of the project has helped you understand confidence intervals better?How did this project help you understand statistics better?Required SoftwareMicrosoft Office: Word and ExcelUse a personal copy or access the software at https://application.chamberlain.edu (Links to an external site.).GradingThis activity will be graded based on the Course Project grading rubric. You can view the rubric below.Course Outcomes (CO): 6Due Date: Course Project Part I By 11:59 p.m. MT on Sunday of Week 6RubricWeek 6 Project: Part IWeek 6 Project: Part ICriteriaRatingsPtsThis criterion is linked to a Learning OutcomePart I: Topic & Introduction4.0 ptsProficient Student picks appropriate topic, provides a description of topic and the cites where data was found.3.0 ptsAbove Average Student picks appropriate topic and introduces data. No citation.2.0 ptsAverage. Student does not pick a topic that is appropriate for the project, introduces the data but does not cite source.1.0 ptsNeeds Improvement Students provides topic without descritption and citation.0.0 ptsNo Effort. No topic, descritpion or citation is provided.4.0 ptsThis criterion is linked to a Learning OutcomePart I: Sample Data4.0 ptsProficient Student provides ALL 50 pieces of data.3.0 ptsAbove Average Student provides 30-49 pieces of data.2.0 ptsAverage Student provides 20 - 29 pieces of data.1.0 ptsNeeds Improvement Student provides 1-19 pieces of data.0.0 ptsNo Effort. No Data was provided.4.0 ptsThis criterion is linked to a Learning OutcomePart I: Mean & Standard Deviation5.0 ptsProficient Mean & Sample Standard Deviation of the data set is correct with no rounding error. .4.0 ptsAbove Average Mean & Sample Standard Deviation of the data set is correct but with roujnding error.3.0 ptsAverage One Value (either mean or sample standsrd deviation) is correct but the other is not correct.1.0 ptsNeeds Improvement Both the Mean & Sample Standard Deviation are incorrect but it was attempted.0.0 ptsNo Effort. The mean and sample standard deviation5.0 ptsThis criterion is linked to a Learning OutcomePart I: Constructing the 80%, 95%, 99% Confidence Intervals15.0 ptsProficient Computes the 80%, 95%, and 99% confidence intervals correclty making sure to note the margin of error for each.12.0 ptsAbove Average Computes the 80%, 95%, and 99% confidence intervals correclty but is missing margin of errors (or some of the margin of errors are incorrect).10.0 ptsAverage Computes the 80%, 95%, and 99% confidence intervals but there are some errors in the calculations.6.0 ptsNeeds Improvement Computes the 80%, 95%, and 99% confidence intervals but all of the values are incorrect. The component was attempted.0.0 ptsNo Effort. No Confidence Intervals are provided.15.0 ptsThis criterion is linked to a Learning OutcomePart I: Creating a new confidence interval7.0 ptsProficient. Student computes a confidence interval (not 80%, 95%, 99%) correctly making sure to list the margin of error.5.0 ptsAbove Average. Student computes a confidence interval (not 80%, 95%, 99%) correctly making sure to list the margin of error but there is rounding error.4.0 ptsAverage. Student computes a confidence interval (not 80%, 95%, 99%) correctly but does not highlight the margin of error.3.0 ptsNeeds Improvement Student computes a confidence interval (not 80%, 95%, 99%) but it was not done correctly.0.0 ptsNo Effort. The student did not create a new confidence interval.7.0 ptsThis criterion is linked to a Learning OutcomePart I: Problem Analysis10.0 ptsProficient. Student addresses trend that takes place when the confidence level rises. Provides a sentence for each confidence interval created explaining what the confidence interval means in context of the data collected. Provides a reflection for Part I of the project.8.0 ptsAbove Average. Student addresses trend that takes place when the confidence level rises. Provides sentences for each confidence interval created explaining what the confience interval means in context of the data collected. Does NOT provide a Reflection.7.0 ptsAverage. Student may or may not address the trend that takes place when the confidence level rises. Provides a sentence for SOME confidence intervaSl created explaining what the confidence interval means in context of the data collected. A reflection Part I of the project may or may not be provided.5.0 ptsNeeds Improvement. Majority of the analysis is missing.0.0 ptsNo Effort. No Problem Anaylsis is provided.10.0 ptsTotal Points: 45.0PreviousNext
Abraham Lincoln University Standard Deviation and Stock Market Data Discussion
Use the Excel file General-Electric and upload it to SPSS. This file contains GE’s daily stock market data covering the ...
Abraham Lincoln University Standard Deviation and Stock Market Data Discussion
Use the Excel file General-Electric and upload it to SPSS. This file contains GE’s daily stock market data covering the period of 12/13/2010 to 12/11/2018. The file contains a total of 2013 daily transaction records including date, opening price of the GE stock for the day, highest price, lowest price, closing price, closing price adjusted for dividends, and the number of stocks traded (volume).1- Use the explore command in SPSS and explain whether the trading volume of the stock is normally distributed. Make sure to discuss, Skewness, kurtosis, results from test of normality as well as the Q-Q plots.2- Select a random Sample of exactly 125 observations. Then run the descriptive command and calculate the mean and standard deviation of the sample. Repeat this process (i.e., selection of a random sample and descriptive command) exactly 50 times. Hint: Use SPSS syntax to repeat the command. List both values (mean and the standard deviation) in a new excel file with proper column headings.3- Upload the newly created excel file into SPSS and create a histogram of both the calculated means and standard deviations.4- Run the explore command similar to what you did in step 1 for both variables and make your observations. Does the Central Limit Theorem (CLT) apply to both measurements?5- Suppose you believe that the true average daily trade volume for General Electric stock is 49,829,719 shares. Based on a recent sample you have also calculated a standard deviation of 21,059,637 shares. Considering a 95% confidence level, what is the minimum required sample size if you like your sampling error to be limited to 10,000,000 shares. What sample size would offer a sampling error of not more than 20,000,000 shares? Assuming N=2013 represents the total population size, how will your calculations change for the finite sample?6- Is there a statistically significant difference between the average trading volume in 2017 and 2018? Hint: While technically, this can be carried out as a pared sample t-test since volume data are reported for the same stock, we will treat this as independent samples. Complete your calculations by hand assuming M2017=46108055, S2017=34099055, n2017=251, M2018= 87241844, S2018=50977722, n2018=238.Repeat the test, this time by using SPSS. Hint: Create a new grouping variable for 2017 and 2018 and use it to run your test.
University of Phoenix Business Plan and Market Analysis Research Paper
PurposeMBA Business Plan componentContextOne of the most important elements in a business plan is the market analysis. A m ...
University of Phoenix Business Plan and Market Analysis Research Paper
PurposeMBA Business Plan componentContextOne of the most important elements in a business plan is the market analysis. A market analysis is a qualitative and quantitative assessment of a market. It includes data collection and estimation in reference to the market size and value; characteristics of the intended customer base; in-depth understanding of the competition; barriers to entry and the regulatory environment. An accurate and detailed market analysis allows entrepreneurs to determine whether the market is sufficiently large to build a sustainable, profitable business. In this assignment, you will prepare a portion of the market analysis for your proposed business (choose a business). You will create a report that can be included as part of your digital portfolio.InstructionsWrite a 525-word report that includes the following sections:Section 1: Business overview, mission and visionSection 2: Market analysisSection 3: RecommendationUse the Market Analysis Research document for details on what to include in each section.Cite references to support your assignment.Format your citations according to APA guidelines.Submit your assignment.
Central Ohio Technical College Data Driven Decision Making Paper
please use excel to answer these questions, PLEASE READ ALL DIRECTIONS as there are a few different requirements and SHOW ...
Central Ohio Technical College Data Driven Decision Making Paper
please use excel to answer these questions, PLEASE READ ALL DIRECTIONS as there are a few different requirements and SHOW ALL WORK FOR EACH QUESTION WITH EXCELPlease make sure you put your name in the space provided at the top right corner of this page.Please insure that your copy of the exam has 8 numbered pages and 12 questions (and two EXTRA-CREDIT questions).You may use your textbook, computer, and notes. You should do all the work on your own and not get any help from others (this includes tutors). Integrate, i.e., cut & paste, computer printouts (as part of the response to the questions) for any questions you use the computer analysis results.For the normal distribution problems #8 and #9, draw appropriate pictures and mark relevant points on the picture by using the Minitab “graph à probability distribution plot” function (you could also do this by drawing the picture on paper, scanning it, and incorporating into your answer).Please turn-in this exam as an electronic (soft) copy. You should type in your answers on this document and turn it in for grading. Please name the Word file as you have done for all submissions in this class. GRADE SUMMARYProblems: Partial44Problems: Complete24Short essays32Extra-Credit10 Total110GOOD LUCKFor your use with Word, I am providing some symbols we have used in class. You may cut-and-paste these symbols as and when you need them on this.= < > ≥ ≤ ≠ µ σ σσ2 S S2H0: H1: a PROBLEMS --PARTIALFor the following three business situations please identify whether the probability distribution to be used to model the situation is Binomial, Poisson, or some other distribution (you do not need to identify this if it is not Binomial or Poisson distribution, just state that it is an unknown distribution) and for each situation justify your choice of the probability distribution by listing the requirements of the distribution and how they are met. (You are not required to solve these problems) (2 + 2 points)Any profit-maximizing firm would like a larger share of the market. The advertising campaign in different communications media is the most effective method to reach the consumers. Chuck Atwood, Optico Corporation’s sales manager, recently concluded a six-month advertising campaign which featured a series of ads in major business periodicals. The firm’s advertising agency assured Optico management that 60% of the purchasing agents in the target industries would be aware of the campaign. At a recent sales convention, only 4 of the 10 purchasing agents whom Chuck Atwood questioned could remember seeing any of the ads. Should Optico undertake a more detailed (and expensive) study of the advertising agency’s claim? Why?Pat Lowe, general manager of Chicago Foundries, is facing a difficult situation. Her plant is currently operating at 60 percent of optimal capacity and is losing money. She has submitted bids on two government contracts, either of which would bring the plant up to capacity. However, if she were to receive both, she would have to subcontract one of them and would be no better off than she currently is. Lowe recently received an invitation to bid on another government contract of the same nature and magnitude as the two she currently has bids on. She is unsure whether she should bid. She would prefer to operate at 60 percent capacity than to receive all three bids. Past experience has convinced her that she has received contracts of this nature 20 percent of the time. Advise Ms. Lowe.Telephone sales operators make on the average 1 call every 10 minutes. Recently, operators have become upset with their working conditions and you wonder if they are slowing down to retaliate. You observe one operator who has made no calls in the past 50 minutes. Assume that the average of 1 call every 10 minutes has not changed. What is the probability that no calls would have been made in the past 50 minutes?For the next four problems, just do the following: (You are not required to solve these problems)A.Set up Null (H0) and alternate (H1) hypotheses (i.e., Step 1) in business terms (i.e., in plain English). (2 points)B.Set up Null (H0) and alternate (H1) hypotheses (i.e., Step 1) in statistical terms. (2 points)C.In the context of the problem, please specify what kind of conclusion will lead to type I error and discuss the implications of making this type of error (i.e., who will it impact and how). (2 + 2 points)The Better Business Bureau has received several complaints that a flour company is underfilling their five pound bags of flour. The Bureau randomly selects 750 bags of flour and determines the weight of each bag. The sample average weight of the bags is 4.80 pounds with a standard deviation of .15 pounds. Is there evidence at the .01 level of significance that the bags are underfilled? A. H0 : H1 :B. H0 : H1 :C.5.The director of the IRS has been flooded with complaints that people must wait for at least 45 minutes before seeing an IRS representative. To determine the validity of these complaints, the IRS randomly selects 400 people entering IRS offices across the country and records the times which they must wait before seeing an IRS representative. The average waiting time for the sample is 55 minutes with a standard deviation of 15 minutes. Are the complaints substantiated by the data? Use a significance level, α, of .10.A. H0 : H1 :B. H0 : H1 :C. A 1990 Survey showed that the average check at Perkins family restaurant is $4.70. The Perkins company wants to know if this figure is too high for 1997. The Perkins company takes a random sample of 54 checks from the restaurants across the country and determines that the sample average check is $4.62. The sample standard deviation of the checks is $0.86. Using a = .05, test to determine whether the Perkins, restaurant check average is significantly lower than $4.70.A. H0 : H1 :B. H0 : H1 :C. To protect U. S. steel producers against competition from low-priced foreign imports, theGovernment has adopted a trigger price mechanism. If steel imports enter this country at less than the minimum or trigger price (based on the cost of production in Japan, which has the world's most efficient steel factories), an investigation into the illegal dumping of cheap steel in the United States by foreign countries is launched. Last year, the average trigger price was set at $358.31 per ton. This year, a random sample of n = 40 was selected, and the trigger price on each of the days was recorded. The data are summarized as follows: Sample mean = $330.88 S = $106.1Does the sample evidence indicate a need for an investigation of illegal dumping?A. H0 : H1 :B. H0 : H1 :C. PROBLEMS – COMPLETE8.A well-known brand of size D batteries has a lifetime that is normally distributed with a mean of 105 hours and a standard deviation of 20 hours. A. What proportion of the batteries has a lifetime of less than 85 hours? (4 points) B. If a person buys 1 battery of this type, what would be the probability that its lifetime would be between 75 and 90 hours? (4 points) 9A A personnel researcher has designed a questionnaire and she would like to estimate the average time to complete the questionnaire. Suppose she samples 100 employees and finds that the mean time to take the test is 27 minutes with a standard deviation of 4 minutes. Construct a 90% confidence interval for the mean time to complete the questionnaire. (6 points) Also, write a short memorandum about the findings to the human resources director of your company summarizing the methodology, findings, results and conclusions. (4 points) – Use Minitab for this analysis.9B. For the problem in part A, the human resources director wants to know whether these is sufficient sample evidence to conclude that the average time to complete the questionnaire is not 27 minutes. Set up the hypotheses (in statistical terms) and, based only on the confidence interval you have constructed in part A, what would you conclude regarding the hypotheses? (6 points) H0 : H1 :Conclusion:ESSAYS (Please double space your work)Management researchers are interested in understanding factors that are related to success of managers in for-profit businesses. You have been hired as a consultant to assist the researchers. As you start your work, develop a plan that addresses the following (page limit: 2 pages):a)What is your clear definition of the problem? i.e., what is it that you would like to show with evidence from data and analysis? (4 points)b)What data would you collect? Identify and specify the variables (so that they can be measured), list them including type and level, and specify why each variable is useful (or needed) for the study. List a few (made-up) values for each variable. Be very specific and to the point. (6 points)c)Present a plan, for collecting the data specified above, in the form of a series of specific instructions for someone else that would actually collect the data for you. (6 points)d)Provide a justification for your plan as it pertains to the quality of the variables that you selected (i.e., explain why you believe that the variables are the best ones to measure to address the issue raised in the study). You may contrast your variables with others (or other ways to measure the same variables) of lesser quality to make your point that yours are the best. (4 points)Write a short tutorial describing, in your own words, "hypothesis testing" to a manager who is not very knowledgeable in business statistics. Do not list the steps or describe the statistical analysis, but describe it as a technique to solve business problems. Use an example problem/situation to illustrate your points. (Page limit: ½ page) (8 points)undefinedSuppose an investment broker’s claim is stated in the hypotheses as: H0: My clients earn an average return of at most 10% per year on their investments. H1: My clients earn an average return of more than 10% per year on their investments.What is the type I error here? What are the implications of this error? Who is affected and why? Explain. (4 points)
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Math 245 discussion - central tendency and measure of dispersion
# Discussion 1: After Watching Discussion Board Stats Videos (On MyLab Statistics) and doing your own research, discuss y ...
Math 245 discussion - central tendency and measure of dispersion
# Discussion 1: After Watching Discussion Board Stats Videos (On MyLab Statistics) and doing your own research, discuss your understanding of Quartiles, Measure of Dispersion and Standard Deviation. Are Sampling always reliable? Why is standard deviation important, give specific examples to illustrate you understanding. # Discussion 2: After Watching Discussion Board Stats Videos (On MyLab Statistics) and doing your own research, discuss your understanding of average, mean and median. Should averages be taken literally? What are the drawbacks. Has your understanding and perceptions of averages changed? If so how?
PHA 6935 University of Florida Applied Statistics Problems
The use of statistics is often employed to highlight international, national, and state trends in crime and drug abuse.1. ...
PHA 6935 University of Florida Applied Statistics Problems
The use of statistics is often employed to highlight international, national, and state trends in crime and drug abuse.1. Explain the following terms in your own words.1. Box-and-whiskers plot2. Standard deviation3. Normal distribution (9 points)2. A BAC describes the amount of alcohol in a person's blood, expressed as weight of alcohol per unit of volume of blood. For example, 0.08 percent BAC indicates 80 mg of alcohol per 100 ml of blood." (source: http://www.austintexas.gov/faq/what-does-blood-alcohol-concentration-bac-measure (Links to an external site.); please note, you do not require to access the source to answer the question) For the data set below calculate the mean, median, mode and standard deviation. Then, for Blood alcohol levels only, plot: a. Frequency histogram b. Probability (i.e. cumulative frequency) plot What do you conclude about the distribution of the sample?From the data set presented here, would you feel comfortable to say that the age group between 30-39 years exhibits higher BAC counts than other age groups? (16 points)AgeBlood alcohol level (mg/dL)2113456532346521348218362489284543102487852563711248105619533685841319036982710425324754356764625078389236845926418134852854241094296193433276418439139743410141954088In an experiment using three tosses of the same coin, state and apply the general equation that provides the total number of possible outcomes for the experiment and list the outcome string (3 points). Then, for each of the following three scenarios, list the possible outcome string and calculate the probability of the scenario as a decimal number (to three places) showing all working (9 points).The probability of getting three heads when flipping a coin 3 times.The probability of at least getting one head and one tail when flipping a coin 3 times.The probability of getting a head in the first flip, a tail in the second, and a head again in the third flip of a coin.Below is an incomplete contingency table displaying two levels for each the gender and the political party association (13 points).Complete the table with all marginal totals and cell counts.Calculate the following probabilities.For a male to be a Republican.For a voter to be female.For a voter to be either a democrat or a female.For a person to not be a female but voting democratic.Political partyTotalGenderRepublicanDemocratMale8773?Female61??Total??300
Chamberlain College of Nursing Weights of 50 Babies at Birth Research Paper
Required ResourcesRead/review the following resources for this activity:Textbook: Chapter 8LessonScenario/SummaryYou will ...
Chamberlain College of Nursing Weights of 50 Babies at Birth Research Paper
Required ResourcesRead/review the following resources for this activity:Textbook: Chapter 8LessonScenario/SummaryYou will complete a Course Project in this course that will span two weeks. The final project is due the Sunday of Week 7. The project is broken into two parts. You will complete Part I in Week 6 and Part II in Week 7. In Week 6, Confidence Intervals will be explored and in Week 7 Hypothesis testing will be explored.A confidence interval is a defined range of values such that there is a specified probability that the value of a parameter lies within the interval.In Part I of this project, you will pick a topic, complete research and provide a write-up that includes calculations. Round all values to two decimal places when appropriate.DeliverablesChoose a Topic where you can gather at least 50 pieces of data.Examples of TopicsThe Golden Gate Warriors Points Per Game in 2016 (use the points scored in the first 50 games).High School Graduation Rates by State (use the graduation rates for all 50 states)Average Tuition Rates in the US (You have to find the tuition rates of 50 college/universities).The prices of a hotel room per night in a major city (You have to find the price of the same night of hotels in one city).Weights of 50 babies at birth.Write at least a 1-Page ReportOpen a Word DocumentIntroduction--Provide a description of your topic and cite where you found your data.Sample Data—Include a 5x10 table including your 50 values in your report. You must provide ALL of your sample data.Problem Computations—For the topic you chose, you must answer the following:Determine the mean and standard deviation of your sample.Find the 80%, 95%, and 99% confidence intervals.Make sure to list the margin of error for the 80%, 95%, and 99% confidence interval.Create your own confidence interval (you cannot use 80%, 95%, and 99%) and make sure to show your work. Make sure to list the margin of error.Problem Analysis—Write a half-page reflection.What trend do you see takes place to the confidence interval as the confidence level rises? Explain mathematically why that takes place.Provide a sentence for each confidence interval created in part c) which explains what the confidence interval means in context of topic of your project.Explain how Part I of the project has helped you understand confidence intervals better?How did this project help you understand statistics better?Required SoftwareMicrosoft Office: Word and ExcelUse a personal copy or access the software at https://application.chamberlain.edu (Links to an external site.).GradingThis activity will be graded based on the Course Project grading rubric. You can view the rubric below.Course Outcomes (CO): 6Due Date: Course Project Part I By 11:59 p.m. MT on Sunday of Week 6RubricWeek 6 Project: Part IWeek 6 Project: Part ICriteriaRatingsPtsThis criterion is linked to a Learning OutcomePart I: Topic & Introduction4.0 ptsProficient Student picks appropriate topic, provides a description of topic and the cites where data was found.3.0 ptsAbove Average Student picks appropriate topic and introduces data. No citation.2.0 ptsAverage. Student does not pick a topic that is appropriate for the project, introduces the data but does not cite source.1.0 ptsNeeds Improvement Students provides topic without descritption and citation.0.0 ptsNo Effort. No topic, descritpion or citation is provided.4.0 ptsThis criterion is linked to a Learning OutcomePart I: Sample Data4.0 ptsProficient Student provides ALL 50 pieces of data.3.0 ptsAbove Average Student provides 30-49 pieces of data.2.0 ptsAverage Student provides 20 - 29 pieces of data.1.0 ptsNeeds Improvement Student provides 1-19 pieces of data.0.0 ptsNo Effort. No Data was provided.4.0 ptsThis criterion is linked to a Learning OutcomePart I: Mean & Standard Deviation5.0 ptsProficient Mean & Sample Standard Deviation of the data set is correct with no rounding error. .4.0 ptsAbove Average Mean & Sample Standard Deviation of the data set is correct but with roujnding error.3.0 ptsAverage One Value (either mean or sample standsrd deviation) is correct but the other is not correct.1.0 ptsNeeds Improvement Both the Mean & Sample Standard Deviation are incorrect but it was attempted.0.0 ptsNo Effort. The mean and sample standard deviation5.0 ptsThis criterion is linked to a Learning OutcomePart I: Constructing the 80%, 95%, 99% Confidence Intervals15.0 ptsProficient Computes the 80%, 95%, and 99% confidence intervals correclty making sure to note the margin of error for each.12.0 ptsAbove Average Computes the 80%, 95%, and 99% confidence intervals correclty but is missing margin of errors (or some of the margin of errors are incorrect).10.0 ptsAverage Computes the 80%, 95%, and 99% confidence intervals but there are some errors in the calculations.6.0 ptsNeeds Improvement Computes the 80%, 95%, and 99% confidence intervals but all of the values are incorrect. The component was attempted.0.0 ptsNo Effort. No Confidence Intervals are provided.15.0 ptsThis criterion is linked to a Learning OutcomePart I: Creating a new confidence interval7.0 ptsProficient. Student computes a confidence interval (not 80%, 95%, 99%) correctly making sure to list the margin of error.5.0 ptsAbove Average. Student computes a confidence interval (not 80%, 95%, 99%) correctly making sure to list the margin of error but there is rounding error.4.0 ptsAverage. Student computes a confidence interval (not 80%, 95%, 99%) correctly but does not highlight the margin of error.3.0 ptsNeeds Improvement Student computes a confidence interval (not 80%, 95%, 99%) but it was not done correctly.0.0 ptsNo Effort. The student did not create a new confidence interval.7.0 ptsThis criterion is linked to a Learning OutcomePart I: Problem Analysis10.0 ptsProficient. Student addresses trend that takes place when the confidence level rises. Provides a sentence for each confidence interval created explaining what the confidence interval means in context of the data collected. Provides a reflection for Part I of the project.8.0 ptsAbove Average. Student addresses trend that takes place when the confidence level rises. Provides sentences for each confidence interval created explaining what the confience interval means in context of the data collected. Does NOT provide a Reflection.7.0 ptsAverage. Student may or may not address the trend that takes place when the confidence level rises. Provides a sentence for SOME confidence intervaSl created explaining what the confidence interval means in context of the data collected. A reflection Part I of the project may or may not be provided.5.0 ptsNeeds Improvement. Majority of the analysis is missing.0.0 ptsNo Effort. No Problem Anaylsis is provided.10.0 ptsTotal Points: 45.0PreviousNext
Abraham Lincoln University Standard Deviation and Stock Market Data Discussion
Use the Excel file General-Electric and upload it to SPSS. This file contains GE’s daily stock market data covering the ...
Abraham Lincoln University Standard Deviation and Stock Market Data Discussion
Use the Excel file General-Electric and upload it to SPSS. This file contains GE’s daily stock market data covering the period of 12/13/2010 to 12/11/2018. The file contains a total of 2013 daily transaction records including date, opening price of the GE stock for the day, highest price, lowest price, closing price, closing price adjusted for dividends, and the number of stocks traded (volume).1- Use the explore command in SPSS and explain whether the trading volume of the stock is normally distributed. Make sure to discuss, Skewness, kurtosis, results from test of normality as well as the Q-Q plots.2- Select a random Sample of exactly 125 observations. Then run the descriptive command and calculate the mean and standard deviation of the sample. Repeat this process (i.e., selection of a random sample and descriptive command) exactly 50 times. Hint: Use SPSS syntax to repeat the command. List both values (mean and the standard deviation) in a new excel file with proper column headings.3- Upload the newly created excel file into SPSS and create a histogram of both the calculated means and standard deviations.4- Run the explore command similar to what you did in step 1 for both variables and make your observations. Does the Central Limit Theorem (CLT) apply to both measurements?5- Suppose you believe that the true average daily trade volume for General Electric stock is 49,829,719 shares. Based on a recent sample you have also calculated a standard deviation of 21,059,637 shares. Considering a 95% confidence level, what is the minimum required sample size if you like your sampling error to be limited to 10,000,000 shares. What sample size would offer a sampling error of not more than 20,000,000 shares? Assuming N=2013 represents the total population size, how will your calculations change for the finite sample?6- Is there a statistically significant difference between the average trading volume in 2017 and 2018? Hint: While technically, this can be carried out as a pared sample t-test since volume data are reported for the same stock, we will treat this as independent samples. Complete your calculations by hand assuming M2017=46108055, S2017=34099055, n2017=251, M2018= 87241844, S2018=50977722, n2018=238.Repeat the test, this time by using SPSS. Hint: Create a new grouping variable for 2017 and 2018 and use it to run your test.
University of Phoenix Business Plan and Market Analysis Research Paper
PurposeMBA Business Plan componentContextOne of the most important elements in a business plan is the market analysis. A m ...
University of Phoenix Business Plan and Market Analysis Research Paper
PurposeMBA Business Plan componentContextOne of the most important elements in a business plan is the market analysis. A market analysis is a qualitative and quantitative assessment of a market. It includes data collection and estimation in reference to the market size and value; characteristics of the intended customer base; in-depth understanding of the competition; barriers to entry and the regulatory environment. An accurate and detailed market analysis allows entrepreneurs to determine whether the market is sufficiently large to build a sustainable, profitable business. In this assignment, you will prepare a portion of the market analysis for your proposed business (choose a business). You will create a report that can be included as part of your digital portfolio.InstructionsWrite a 525-word report that includes the following sections:Section 1: Business overview, mission and visionSection 2: Market analysisSection 3: RecommendationUse the Market Analysis Research document for details on what to include in each section.Cite references to support your assignment.Format your citations according to APA guidelines.Submit your assignment.
Central Ohio Technical College Data Driven Decision Making Paper
please use excel to answer these questions, PLEASE READ ALL DIRECTIONS as there are a few different requirements and SHOW ...
Central Ohio Technical College Data Driven Decision Making Paper
please use excel to answer these questions, PLEASE READ ALL DIRECTIONS as there are a few different requirements and SHOW ALL WORK FOR EACH QUESTION WITH EXCELPlease make sure you put your name in the space provided at the top right corner of this page.Please insure that your copy of the exam has 8 numbered pages and 12 questions (and two EXTRA-CREDIT questions).You may use your textbook, computer, and notes. You should do all the work on your own and not get any help from others (this includes tutors). Integrate, i.e., cut & paste, computer printouts (as part of the response to the questions) for any questions you use the computer analysis results.For the normal distribution problems #8 and #9, draw appropriate pictures and mark relevant points on the picture by using the Minitab “graph à probability distribution plot” function (you could also do this by drawing the picture on paper, scanning it, and incorporating into your answer).Please turn-in this exam as an electronic (soft) copy. You should type in your answers on this document and turn it in for grading. Please name the Word file as you have done for all submissions in this class. GRADE SUMMARYProblems: Partial44Problems: Complete24Short essays32Extra-Credit10 Total110GOOD LUCKFor your use with Word, I am providing some symbols we have used in class. You may cut-and-paste these symbols as and when you need them on this.= < > ≥ ≤ ≠ µ σ σσ2 S S2H0: H1: a PROBLEMS --PARTIALFor the following three business situations please identify whether the probability distribution to be used to model the situation is Binomial, Poisson, or some other distribution (you do not need to identify this if it is not Binomial or Poisson distribution, just state that it is an unknown distribution) and for each situation justify your choice of the probability distribution by listing the requirements of the distribution and how they are met. (You are not required to solve these problems) (2 + 2 points)Any profit-maximizing firm would like a larger share of the market. The advertising campaign in different communications media is the most effective method to reach the consumers. Chuck Atwood, Optico Corporation’s sales manager, recently concluded a six-month advertising campaign which featured a series of ads in major business periodicals. The firm’s advertising agency assured Optico management that 60% of the purchasing agents in the target industries would be aware of the campaign. At a recent sales convention, only 4 of the 10 purchasing agents whom Chuck Atwood questioned could remember seeing any of the ads. Should Optico undertake a more detailed (and expensive) study of the advertising agency’s claim? Why?Pat Lowe, general manager of Chicago Foundries, is facing a difficult situation. Her plant is currently operating at 60 percent of optimal capacity and is losing money. She has submitted bids on two government contracts, either of which would bring the plant up to capacity. However, if she were to receive both, she would have to subcontract one of them and would be no better off than she currently is. Lowe recently received an invitation to bid on another government contract of the same nature and magnitude as the two she currently has bids on. She is unsure whether she should bid. She would prefer to operate at 60 percent capacity than to receive all three bids. Past experience has convinced her that she has received contracts of this nature 20 percent of the time. Advise Ms. Lowe.Telephone sales operators make on the average 1 call every 10 minutes. Recently, operators have become upset with their working conditions and you wonder if they are slowing down to retaliate. You observe one operator who has made no calls in the past 50 minutes. Assume that the average of 1 call every 10 minutes has not changed. What is the probability that no calls would have been made in the past 50 minutes?For the next four problems, just do the following: (You are not required to solve these problems)A.Set up Null (H0) and alternate (H1) hypotheses (i.e., Step 1) in business terms (i.e., in plain English). (2 points)B.Set up Null (H0) and alternate (H1) hypotheses (i.e., Step 1) in statistical terms. (2 points)C.In the context of the problem, please specify what kind of conclusion will lead to type I error and discuss the implications of making this type of error (i.e., who will it impact and how). (2 + 2 points)The Better Business Bureau has received several complaints that a flour company is underfilling their five pound bags of flour. The Bureau randomly selects 750 bags of flour and determines the weight of each bag. The sample average weight of the bags is 4.80 pounds with a standard deviation of .15 pounds. Is there evidence at the .01 level of significance that the bags are underfilled? A. H0 : H1 :B. H0 : H1 :C.5.The director of the IRS has been flooded with complaints that people must wait for at least 45 minutes before seeing an IRS representative. To determine the validity of these complaints, the IRS randomly selects 400 people entering IRS offices across the country and records the times which they must wait before seeing an IRS representative. The average waiting time for the sample is 55 minutes with a standard deviation of 15 minutes. Are the complaints substantiated by the data? Use a significance level, α, of .10.A. H0 : H1 :B. H0 : H1 :C. A 1990 Survey showed that the average check at Perkins family restaurant is $4.70. The Perkins company wants to know if this figure is too high for 1997. The Perkins company takes a random sample of 54 checks from the restaurants across the country and determines that the sample average check is $4.62. The sample standard deviation of the checks is $0.86. Using a = .05, test to determine whether the Perkins, restaurant check average is significantly lower than $4.70.A. H0 : H1 :B. H0 : H1 :C. To protect U. S. steel producers against competition from low-priced foreign imports, theGovernment has adopted a trigger price mechanism. If steel imports enter this country at less than the minimum or trigger price (based on the cost of production in Japan, which has the world's most efficient steel factories), an investigation into the illegal dumping of cheap steel in the United States by foreign countries is launched. Last year, the average trigger price was set at $358.31 per ton. This year, a random sample of n = 40 was selected, and the trigger price on each of the days was recorded. The data are summarized as follows: Sample mean = $330.88 S = $106.1Does the sample evidence indicate a need for an investigation of illegal dumping?A. H0 : H1 :B. H0 : H1 :C. PROBLEMS – COMPLETE8.A well-known brand of size D batteries has a lifetime that is normally distributed with a mean of 105 hours and a standard deviation of 20 hours. A. What proportion of the batteries has a lifetime of less than 85 hours? (4 points) B. If a person buys 1 battery of this type, what would be the probability that its lifetime would be between 75 and 90 hours? (4 points) 9A A personnel researcher has designed a questionnaire and she would like to estimate the average time to complete the questionnaire. Suppose she samples 100 employees and finds that the mean time to take the test is 27 minutes with a standard deviation of 4 minutes. Construct a 90% confidence interval for the mean time to complete the questionnaire. (6 points) Also, write a short memorandum about the findings to the human resources director of your company summarizing the methodology, findings, results and conclusions. (4 points) – Use Minitab for this analysis.9B. For the problem in part A, the human resources director wants to know whether these is sufficient sample evidence to conclude that the average time to complete the questionnaire is not 27 minutes. Set up the hypotheses (in statistical terms) and, based only on the confidence interval you have constructed in part A, what would you conclude regarding the hypotheses? (6 points) H0 : H1 :Conclusion:ESSAYS (Please double space your work)Management researchers are interested in understanding factors that are related to success of managers in for-profit businesses. You have been hired as a consultant to assist the researchers. As you start your work, develop a plan that addresses the following (page limit: 2 pages):a)What is your clear definition of the problem? i.e., what is it that you would like to show with evidence from data and analysis? (4 points)b)What data would you collect? Identify and specify the variables (so that they can be measured), list them including type and level, and specify why each variable is useful (or needed) for the study. List a few (made-up) values for each variable. Be very specific and to the point. (6 points)c)Present a plan, for collecting the data specified above, in the form of a series of specific instructions for someone else that would actually collect the data for you. (6 points)d)Provide a justification for your plan as it pertains to the quality of the variables that you selected (i.e., explain why you believe that the variables are the best ones to measure to address the issue raised in the study). You may contrast your variables with others (or other ways to measure the same variables) of lesser quality to make your point that yours are the best. (4 points)Write a short tutorial describing, in your own words, "hypothesis testing" to a manager who is not very knowledgeable in business statistics. Do not list the steps or describe the statistical analysis, but describe it as a technique to solve business problems. Use an example problem/situation to illustrate your points. (Page limit: ½ page) (8 points)undefinedSuppose an investment broker’s claim is stated in the hypotheses as: H0: My clients earn an average return of at most 10% per year on their investments. H1: My clients earn an average return of more than 10% per year on their investments.What is the type I error here? What are the implications of this error? Who is affected and why? Explain. (4 points)
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