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deductive reasoning.
By observing the general trend about it raining the past three years, he makes the prediction that it will specifically rain this trip.
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CSUEB Basic Statistics & Probability Samples & R Programming Exam Practice
Please answer the attached basic stats questions and use R programming for the questions 5 and 6Question 1. [20 points] Th ...
CSUEB Basic Statistics & Probability Samples & R Programming Exam Practice
Please answer the attached basic stats questions and use R programming for the questions 5 and 6Question 1. [20 points] The distribution of automobile speeds on a certain highway is normally distributed
with a mean of 71.6 miles/hour, and a standard deviation of 4.53 miles/hour. (a) What is the probability that an automobile travels slower than 75 miles/hour?
(b) What is the probability that an automobile travels faster than 65 miles/hour?
(c) What is the probability that an automobile travels between 65 and 75 miles/hour? (d) What is the 90th percentile for the speeds of automobiles on this highway? 2
Question 2. [10 points] Let X1, X2, · · · , X100 be a random sample of size n = 100 from a population with
mean µ = 20 and σ = 15. Let X¯ =
1
100
P100
i=1 Xi
.
(a) What is E(X¯) and SD(X¯) (i.e., the mean and standard deviation of the sampling distribution for X¯)?
(b) What distribution does the sample mean X¯ follow? Explain.
(c) Calculate P(X >¯ 23)
Question 3. [10 points] From past experience, it is known that the number of tickets purchased by each
customer standing in line at the ticket window at a certain movie theater follows a distribution with mean
µ = 1.5 and standard deviation σ = 0.6. Suppose that there are 40 customers waiting in line to get tickets
before the start of a movie. If only 55 tickets remain, what is the probability that all 40 customers will be
able to purchase the tickets they desire? Question 4.[10 points] Mark the following as either True or False. (a) The mean and median are usually approximately equal when the distribution of data in a
histogram is skewed right.
(b) The daily commute for an employee takes an average of 1.3 hours with a standard deviation of
0.45 hours. When converting from hours to minutes, the average commute time is 78 minutes with a
standard deviation of 27 minutes. (c) The following scenario is an example of stratified random sampling: A polling agency is interested in determining how concerned adult Americans are about the coronavirus’s effect on the economy.
The agency decides to interview a simple random sample of adults from each state. The number of
adults sampled in each state is proportional to the population size of each state.
(d) The following scenario is an example of simple random sampling: An administrator at a University is interested in conducting a survey to investigate how students are adapting to online instruction.
The administrator decides to sample every 10th student from an alphabetical listing of all students that
attend the University. (e) Observational studies can be used to infer cause-and-effect relationships between variables. Question) Let X1, X2, · · · , Xn be independent and identically distributed (i.i.d.) random variables.
Let E(Xi) = µ and V ar(Xi) = σ
2
. Let T =
Pn
i=1 Xi
. Show that E(T) = nµ and V ar(T) = nσ2
.
13 pages
Stat 200 Week 6 Solutions
Many high school students take the AP tests in different subject areas. In 2007, of the 144,796 students who took the biol ...
Stat 200 Week 6 Solutions
Many high school students take the AP tests in different subject areas. In 2007, of the 144,796 students who took the biology exam 84,199 of them were ...
QSO 510 Southern New Hampshire University Paralyzed Veterans of America Paper
Management professionals are often relied upon to make decisions regarding operational processes. Those who utilize a data ...
QSO 510 Southern New Hampshire University Paralyzed Veterans of America Paper
Management professionals are often relied upon to make decisions regarding operational processes. Those who utilize a data-driven, structured approach have a clear advantage over those offering decisions based solely on intuition. Your task is to review the scenario found in your textbook on page 685-686, the supplemental case study document and the accompanying data set outline the appropriate analysis strategy; select a suitable statistical method; and use data analysis to ultimately drive the decision. Once this has been completed, you will be challenged to present your data, data analysis strategy, and overall decision in a concise report, justifying your analysis.Specifically, the following critical elements must be addressed:Introduction to the problem:Provide a concise description of the scenario that you will be analyzing. The following questions might help you describe the scenario: What is the type of organization identified in the scenario? What is the organization’s history and problem identified in the scenario?Create an analysis plan to guide your analysis and decision making: In this section you will review the data set to inform the statistical method that will be used. To inform your responses in this section, calculate the central tendency of the dependent variable, develop a histogram of the gift amount and develop scatterplots for the gift amount for each independent variable.Identify any quantifiable factors that may be affecting the performance of operational processes.Develop a single sentence problem statement that addresses the given problem in the scenario and contains quantifiable measures.Propose a strategy that addresses the problem of the organization in the given case study.Identify statistical methods to collect data:Identify the appropriate statistical methods that you will use to perform your analysis. What are your statistical assumptions concerning thedata that led you to selecting the methods? In other words, why did you select this method for statistical analysis?Justify why you chose these methods to analyze the data. Be sure to include how these methods will help predict the use of the data in drivingdecisions using cited evidence.Data-Driven Decisions to determine the appropriate decision for the identified problem:Outline the process needed to utilize your statistical analysis to reach a decision regarding the given problem.Explain how data mining is used to develop a solution to the case. In your response, consider the concepts of metadata.Explain if the problem is a structured or unstructured problem.Assess how the variables have potential for answering the problem.Recommend operational improvements to stakeholders after you have completed the calculations:Demonstrate a data-driven calculation that addresses the given problem statement.Summarize results of the analysis plan. In your response, be sure to explain the validity of the model solution.C. Explain how the model solution addresses the given problem statement.Final Project Submission: Statistical Analysis ReportIn Module Nine, you will submit your statistical analysis report and recommendations. It should be a complete, polished artifact containing all of the critical elements of the final product. It should reflect the incorporation of feedback gained throughout the course. This submission will be graded with the Final Project Rubric.Final Project RubricGuidelines for Submission: Your statistical analysis report must be 5-6 pages in length (plus a cover page and references) and must be written in APA format. Use double spacing, 12-point Times New Roman font, and one-inch margins. Include at least six references cited in APA format.
3 pages
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ANT 3402 UWaterloo Occupational Prestige IBM SPSS Statistics Analysis Project
first one are the sample, rest are reqirements and reading, the datafile will be uploaded later
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first one are the sample, rest are reqirements and reading, the datafile will be uploaded later
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Week 6 DiscussionALEKS Scavenger Hunt: This week you’ll demonstrate your problem-solving skills by sharing how data can help you solve problems in ALEKS.First, post a screenshot of one of your unsolved questions that you have worked on or are working on in ALEKS. Then add a comment on how data can help to answer the question or how this type of data can help you to make data driven decisions.Next, pick a question submitted by someone else in your class that you have solved, and leave a comment about the data-driven strategy or tool you used to reach a solution.Be sure to respond to at least one of your classmates’ posts.
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Most Popular Content
CSUEB Basic Statistics & Probability Samples & R Programming Exam Practice
Please answer the attached basic stats questions and use R programming for the questions 5 and 6Question 1. [20 points] Th ...
CSUEB Basic Statistics & Probability Samples & R Programming Exam Practice
Please answer the attached basic stats questions and use R programming for the questions 5 and 6Question 1. [20 points] The distribution of automobile speeds on a certain highway is normally distributed
with a mean of 71.6 miles/hour, and a standard deviation of 4.53 miles/hour. (a) What is the probability that an automobile travels slower than 75 miles/hour?
(b) What is the probability that an automobile travels faster than 65 miles/hour?
(c) What is the probability that an automobile travels between 65 and 75 miles/hour? (d) What is the 90th percentile for the speeds of automobiles on this highway? 2
Question 2. [10 points] Let X1, X2, · · · , X100 be a random sample of size n = 100 from a population with
mean µ = 20 and σ = 15. Let X¯ =
1
100
P100
i=1 Xi
.
(a) What is E(X¯) and SD(X¯) (i.e., the mean and standard deviation of the sampling distribution for X¯)?
(b) What distribution does the sample mean X¯ follow? Explain.
(c) Calculate P(X >¯ 23)
Question 3. [10 points] From past experience, it is known that the number of tickets purchased by each
customer standing in line at the ticket window at a certain movie theater follows a distribution with mean
µ = 1.5 and standard deviation σ = 0.6. Suppose that there are 40 customers waiting in line to get tickets
before the start of a movie. If only 55 tickets remain, what is the probability that all 40 customers will be
able to purchase the tickets they desire? Question 4.[10 points] Mark the following as either True or False. (a) The mean and median are usually approximately equal when the distribution of data in a
histogram is skewed right.
(b) The daily commute for an employee takes an average of 1.3 hours with a standard deviation of
0.45 hours. When converting from hours to minutes, the average commute time is 78 minutes with a
standard deviation of 27 minutes. (c) The following scenario is an example of stratified random sampling: A polling agency is interested in determining how concerned adult Americans are about the coronavirus’s effect on the economy.
The agency decides to interview a simple random sample of adults from each state. The number of
adults sampled in each state is proportional to the population size of each state.
(d) The following scenario is an example of simple random sampling: An administrator at a University is interested in conducting a survey to investigate how students are adapting to online instruction.
The administrator decides to sample every 10th student from an alphabetical listing of all students that
attend the University. (e) Observational studies can be used to infer cause-and-effect relationships between variables. Question) Let X1, X2, · · · , Xn be independent and identically distributed (i.i.d.) random variables.
Let E(Xi) = µ and V ar(Xi) = σ
2
. Let T =
Pn
i=1 Xi
. Show that E(T) = nµ and V ar(T) = nσ2
.
13 pages
Stat 200 Week 6 Solutions
Many high school students take the AP tests in different subject areas. In 2007, of the 144,796 students who took the biol ...
Stat 200 Week 6 Solutions
Many high school students take the AP tests in different subject areas. In 2007, of the 144,796 students who took the biology exam 84,199 of them were ...
QSO 510 Southern New Hampshire University Paralyzed Veterans of America Paper
Management professionals are often relied upon to make decisions regarding operational processes. Those who utilize a data ...
QSO 510 Southern New Hampshire University Paralyzed Veterans of America Paper
Management professionals are often relied upon to make decisions regarding operational processes. Those who utilize a data-driven, structured approach have a clear advantage over those offering decisions based solely on intuition. Your task is to review the scenario found in your textbook on page 685-686, the supplemental case study document and the accompanying data set outline the appropriate analysis strategy; select a suitable statistical method; and use data analysis to ultimately drive the decision. Once this has been completed, you will be challenged to present your data, data analysis strategy, and overall decision in a concise report, justifying your analysis.Specifically, the following critical elements must be addressed:Introduction to the problem:Provide a concise description of the scenario that you will be analyzing. The following questions might help you describe the scenario: What is the type of organization identified in the scenario? What is the organization’s history and problem identified in the scenario?Create an analysis plan to guide your analysis and decision making: In this section you will review the data set to inform the statistical method that will be used. To inform your responses in this section, calculate the central tendency of the dependent variable, develop a histogram of the gift amount and develop scatterplots for the gift amount for each independent variable.Identify any quantifiable factors that may be affecting the performance of operational processes.Develop a single sentence problem statement that addresses the given problem in the scenario and contains quantifiable measures.Propose a strategy that addresses the problem of the organization in the given case study.Identify statistical methods to collect data:Identify the appropriate statistical methods that you will use to perform your analysis. What are your statistical assumptions concerning thedata that led you to selecting the methods? In other words, why did you select this method for statistical analysis?Justify why you chose these methods to analyze the data. Be sure to include how these methods will help predict the use of the data in drivingdecisions using cited evidence.Data-Driven Decisions to determine the appropriate decision for the identified problem:Outline the process needed to utilize your statistical analysis to reach a decision regarding the given problem.Explain how data mining is used to develop a solution to the case. In your response, consider the concepts of metadata.Explain if the problem is a structured or unstructured problem.Assess how the variables have potential for answering the problem.Recommend operational improvements to stakeholders after you have completed the calculations:Demonstrate a data-driven calculation that addresses the given problem statement.Summarize results of the analysis plan. In your response, be sure to explain the validity of the model solution.C. Explain how the model solution addresses the given problem statement.Final Project Submission: Statistical Analysis ReportIn Module Nine, you will submit your statistical analysis report and recommendations. It should be a complete, polished artifact containing all of the critical elements of the final product. It should reflect the incorporation of feedback gained throughout the course. This submission will be graded with the Final Project Rubric.Final Project RubricGuidelines for Submission: Your statistical analysis report must be 5-6 pages in length (plus a cover page and references) and must be written in APA format. Use double spacing, 12-point Times New Roman font, and one-inch margins. Include at least six references cited in APA format.
3 pages
Time Series
A time series analysis will be an important tool in evaluating patterns and behavior of the statistical data over a period ...
Time Series
A time series analysis will be an important tool in evaluating patterns and behavior of the statistical data over a period of time. It will be of ...
ANT 3402 UWaterloo Occupational Prestige IBM SPSS Statistics Analysis Project
first one are the sample, rest are reqirements and reading, the datafile will be uploaded later
ANT 3402 UWaterloo Occupational Prestige IBM SPSS Statistics Analysis Project
first one are the sample, rest are reqirements and reading, the datafile will be uploaded later
Mathematics Question
Week 6 DiscussionALEKS Scavenger Hunt: This week you’ll demonstrate your problem-solving skills by sharing how data can ...
Mathematics Question
Week 6 DiscussionALEKS Scavenger Hunt: This week you’ll demonstrate your problem-solving skills by sharing how data can help you solve problems in ALEKS.First, post a screenshot of one of your unsolved questions that you have worked on or are working on in ALEKS. Then add a comment on how data can help to answer the question or how this type of data can help you to make data driven decisions.Next, pick a question submitted by someone else in your class that you have solved, and leave a comment about the data-driven strategy or tool you used to reach a solution.Be sure to respond to at least one of your classmates’ posts.
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