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Week Three Lab
Read/review the following resources for this activity:OpenStax Textbook: Chapter 2LessonChamberlain University LibraryInte ...
Week Three Lab
Read/review the following resources for this activity:OpenStax Textbook: Chapter 2LessonChamberlain University LibraryInternetSCENARIO/SUMMARYThis week's lab highlights the use of graphics, distributions, and tables to summarize and interpret data.Follow the directions below to find one of the given academic articles from the Chamberlain library and then use that to describe the graphs and tables included. Further, you will describe other ways that the same data could be presented.DELIVERABLESThe deliverable is a Word document with your answers to the questions posed below based on the article you find.REQUIRED SOFTWAREMicrosoft WordInternet access to read articlesSTEPS TO COMPLETE WEEK 3 LABStep 1: Go to the Chamberlain Library at: https://library.chamberlain.edu (Links to an external site.) .Step 2: Click Databases in the Search the Library block. Then choose ProQuest Nursing and Allied Health Database in the dropdown menu.Database Search ExampleStep 3: Below, you will find the titles of six articles from the ProQuest database that show a frequency distribution within the article. CHOOSE ONE OF THE ARTICLES FROM THE LIST BELOW. You will perform two searches using this article.For our first broad-based search, use the underlined words in your chosen article to search and see how many articles from the database contain these underlined words (see the example below the article list for an example search on post-partum depression).Article TitlesOral manifestations in diabetic patients under treatment for ischemic heart diseases: A comparative observational studySystolic blood pressure , diastolic blood pressure, and pulse pressure: An evaluation of their joint effect on mortalityThe Relationship Between Body Mass Index (BMI) and Menstrual Disorders at Different Ages of Menarche and Sex HormonesAdolescents' first tobacco products: Associations with current multiple tobacco product useAssociation of lifestyle modification and pharmacological adherence on blood pressure control among patients with hypertension at Kenyatta National Hospital, Kenya: A crosssectional studyDemographic, parental, and personal factors and youth athletes' concussion -related knowledge and beliefsExample of search on post partum depressionMake sure to checkmark Full Text and Peer Reviewed, and choose Last 12 Months from the drop down list. Also, choose English under the language section.This will yield a list of articles about the topic that you chose. Look to see how many results were found.For our second more narrow search, go back and search for the title of the article that you chose originally. Type A PORTION of the article title into the search bar and find the full PDF for that article.Step 4: Complete your lab by taking the following stepsCopy and paste, or post a screen shot of the frequency distribution from the article you chose at the top of your Word document.On your first search, what terms did you use, and what other things did you mark on the search page before conducting your search? Why did you choose the article that you did? How many articles were found with these search terms? Give the full APA reference of the article you are using for this lab.What data are shown in the frequency distribution and why might it be of interest? Include the size of the classes, noting if they are of a consistent size or not. Also include a conclusion that could be made from the frequency distribution. (1 to 2 paragraphs)How else might these data have been displayed? Discuss pros and cons of 2 other presentation options, such as tables or different graphical displays (1 to 2 paragraphs)Step 5: Be sure your name is on the Word document, save it, and then submit it under "Assignments" and "Week 3: Lab".
Descriptive statistics
Please answer the following questions: If you were given a large data set (i.e., sales over the last year of our top 100 c ...
Descriptive statistics
Please answer the following questions: If you were given a large data set (i.e., sales over the last year of our top 100 customers), what might you be able to do with these data? What might be the benefits of describing the data?This is an example post the professor posted, just to have an idea what professor wants:Example Post:We have to look at the different groups of costumers that buy our products. We can select and divide these groups into categories, for example:What percentage of this data are males?What percentage of this data are females?What percentage are young customers?What percentage of females’ vs males buying certain products?What is the tendency of young buyers?What are the ages of the different costumers?Which locations have the most sales?What are the buying behaviors the costumers have?What costumers buy more frequently?What is the frequency in which costumers buy?What are the ages of the different costumers?What is the product that sells the most? What is the frequency of that particular product being bought by each gender?What are the geographies of the different groups of costumers, by knowing this the company can map potential customers, identifying costumer concentration.By having the knowledge of a particular scenario one can focus his or her products based on what is being sought after. We can organize and describe this data and make a frequency distribution table in which, the costumer’s age can placed in groups or classes determining the frequency; For example, how many costumers from ages 10 to 20 years do we have? How often they buy a product? What kind of products they buy? What is the age group with more frequency of buying certain products? Therefore, allowing the company to canalize its products to specific ages. Another way to organize and visualize this data is to draw a histogram in which the X- axis, is the different age’s groups and the Y- axis is the frequency; this will help the company to find the average age in this data (mean). Through this histogram data vary (range) can be determined. All of this information will aid the company in marketing its products more efficiently. By graphical analysis the company can determine the number of classes, estimate the frequency of the class with the least frequency, and estimate the frequency of the class with the greatest frequency. Having all these information will help the company to measure the data and at the same time visualize the future of its market. Also the organization of this data allows the analyzer to see if specific products sell better at certain times of the year. We can focus which items these 100 customers are not buying, this is important and helpful when deciding the par level of these items. Another way is to use a frequency chart divided in 12 classes equivalent to the months of the year. In this case, the frequency is the number of purchases for each month. If I plotted this data into a histogram I can show the highest months for profit. This is a good way to visualize in order to make easier comparisons. I can use a stem-and-leaf plot to look at the amount of money spent in the entire year. For example, if $411 is the lowest amount spent and $1250 is the highest amount spent, the stem values could range from 4 to 12. By create the plot, we list these stems to the left of a vertical line (Larson & Farber, 2015). This can show any patterns in the amounts of money my top customers spent. Another way is to select a random sample of my top customers and put together a dot plot for the products they bought, this way to see which products are the top sellers; this will be very helpful to increase my sales.To decide future inventory selection, it will be important to collect data pertinent to dates of the purchases, which items were purchase and the quantity of each product.
Week 5 Statistical Significance & Meaningfulness on Sample Statements Paper
Part of your task as a scholar-practitioner is to act as a
critical consumer of research and ask informed ques ...
Week 5 Statistical Significance & Meaningfulness on Sample Statements Paper
Part of your task as a scholar-practitioner is to act as a
critical consumer of research and ask informed questions of published
material. Sometimes, claims are made that do not match the results of
the analysis. Unfortunately, this is why statistics is sometimes
unfairly associated with telling lies. These misalignments might not be
solely attributable to statistical nonsense, but also “user error.” One
of the greatest areas of user error is within the practice of hypothesis
testing and interpreting statistical significance. As you continue to
consume research, be sure and read everything with a critical eye and
call out statements that do not match the results.
For this Assignment, you will examine statistical significance and meaningfulness based on sample statements.To prepare for this Assignment:Review the Week 5 Scenarios found in this week’s Learning Resources and select two of the four scenarios for this Assignment. For additional support, review the Skill Builder: Evaluating P Values and the Skill Builder: Statistical Power,
which you can find by navigating back to your Blackboard Course Home
Page. From there, locate the Skill Builder link in the left navigation
pane. For this Assignment:Critically evaluate the two scenarios you selected based upon the following points:Critically evaluate the sample size.Critically evaluate the statements for meaningfulness.Critically evaluate the statements for statistical significance.Based on your evaluation, provide an explanation of the implications for social change.Use proper APA format and citations, and referencing.Week 5 Scenarios:1.The p-value was slightly above conventional threshold, but was described as “rapidly approaching significance” (i.e., p=.06). An independent samples t test was used to determine whether student satisfaction levels in a quantitative reasoning course differed between the traditional classroom and on-line environments.The samples consisted of students in four face-to-face classes at a traditional state university (n=65) and four online classes offered at the same university (n=69). Students reported their level of satisfaction on a five-point scale, with higher values indicating higher levels of satisfaction.Since the study was exploratory in nature, levels of significance were relaxed to the .10 level. The test was significant t(132) = 1.8, p= .074, wherein students in the face-to-face class reported lower levels of satisfaction (M= 3.39, SD= 1.8)than did those in the online sections (M= 3.89, SD= 1.4).We therefore conclude that on average, students in online quantitative reasoning classes have higher levels of satisfaction.The results of this study are significant because they provide educators with evidence of what medium works better in producing quantitatively knowledgeable practitioners.2.A results report that does not find any effect and also has small sample size (possibly no effect detected due to lack of power). A one-way analysis of variance was used to test whether a relationship exists between educational attainment and race. The dependent variable of education was measured as number of years of education completed. The race factor had three attributes of European American (n=36), African American (n=23) and Hispanic (n=18). Descriptive statistics indicate that on average, European Americans have higher levels of education (M=16.4, SD=4.6), with African Americans slightly trailing (M= 15.5, SD=6.8) and Hispanics having on average lower levels of educational attainment (M=13.3, SD=6.1). The ANOVA was not significant F(2,74) = 1.789, p= .175, indicating there are no differences in educational attainment across these three races in the population.The results of this study are significant because they shed light on the current social conversation about inequality. 3.Statistical significance is found in a study, but the effect in reality is very small (i.e., there was a very minor difference in attitude between men and women). Were the results meaningful?An independent samples t test was conducted to determine whether differences exist between men and women on cultural competency scores. The samples consisted of 663 women and 650 men taken from a convenience sample of public, private,and non-profit organizations. Each participant was administered an instrument that measured his or her current levels of cultural competency. The © 2016 Laureate Education, Inc. Page 2of 2cultural competency score ranges from 0 to 10,with higher scores indicating higher levels of cultural competency. The descriptive statistics indicate women have higher levels of cultural competency (M= 9.2, SD= 3.2) than men (M= 8.9, SD=2.1). The results were significant t(1311) = 2.0, p<.05, indicating that women are more culturally competent than are men. These results tell us that gender-specific interventions targeted toward men may assist in bolstering cultural competency. 4.A study has results that seem fine, but there is no clear association to social change. What is missing? A correlation test was conducted to determine whether a relationship exists between level of income and job satisfaction. The sample consisted of 432 employees equally represented across public, private,and non-profit sectors. The results of the test demonstrate a strong positive correlation between the two variables,r=.87, p<.01, showing that as level of income increases, job satisfaction increases as well.
Stratford University Mathematics Probability Questions Worksheet
A1. Week 3 Post (300+ words):Think of some discrete random variable you observe on a regular basis. For example, it coul ...
Stratford University Mathematics Probability Questions Worksheet
A1. Week 3 Post (300+ words):Think of some discrete random variable you observe on a regular basis. For example, it could be the (rounded) number of hours you sleep, how many gallons of gas are in your car when you get into it, how many boxes of cereal are in your house, how many days between grocery shopping, etc. (just make sure it takes only integer values). Try to list all of the possible values that this discrete random variable can take. If you can, collect some frequency data – give the relative frequency table and use this as an estimate of the probability distribution. Calculate the expected value and the standard deviation for this probability distribution. Interpret these parameters, and discuss whether they make sense based on your experience.B1. Find the mean of the given probability distribution.2. Find the mean of the given probability distribution.The random variable x is the number of houses sold by a realtor in a single month at the Sendsom's Real Estate office. Its probability distribution is as follows.5. Provide an appropriate response.In a game, you have a probability of winning and a probability of losing What is your expected value?6. Provide an appropriate response.A contractor is considering a sale that promises a profit of $26,000 with a probability of 0.7 or a loss (due to bad weather, strikes, and such) of $8000 with a probability of 0.3. What is the expected profit?7. Find the indicated probability. Round to three decimal places.A test consists of 10 true/false questions. To pass the test a student must answer at least 6 questions correctly. If a student guesses on each question, what is the probability that the student will pass the test?8. Find the indicated probability. Round to three decimal places.A machine has 11 identical components which function independently. The probability that a component will fail is 0.2. The machine will stop working if more than three components fail. Find the probability that the machine will be working.9. Find the indicated probability. Round to three decimal places.In a certain college, 33% of the physics majors belong to ethnic minorities. If 10 students are selected at random from the physics majors, that is the probability that no more than 6 belong to an ethnic minority?10. Find the indicated probability. Round to three decimal places.Find the probability of at least 2 girls in 6 births. Assume that male and female births are equally likely and that the births are independent events.
MATH 244 Rutgers University Differential Equations Lab Reports
MATLAB in Math 244
Math 244 uses MATLAB assignments to given an opportunity for students to explore the computational side ...
MATH 244 Rutgers University Differential Equations Lab Reports
MATLAB in Math 244
Math 244 uses MATLAB assignments to given an opportunity for students to explore the computational side of differential equations and see how MATLAB can be used to solve and visualize these equations. Assignments and due dates will be decided by individual instructors. In order to complete the assignments, students will need the supplemental MATLAB functions as well as the format files provided here.
In general, it is assumed that students in the Engineering major will already have some exposure to MATLAB before this class, both in their major classes and in Math 251. If a refresher is needed on this material, you can consult the webpage here or discuss it with your instructor. There are also details provided for these particular lab assignments on the webpage here. It may also be helpful to complete the Lab 0 assignment here
to get practice on some of the basics needed to complete these assignments. The MATLAB documentation for any method you want to use (which will come up if you Google it) is also very good once you get a handle on the basic syntax of MATLAB.
Supplemental Files (zip file containing 11 MATLAB functions)
Lab 1: Sample Assignment
, Format File, and Grading Rubric
.
Lab 2: Sample Assignment
, Format File, and Grading Rubric
.
Lab 3: Sample Assignment
, Format File, and Grading Rubric
.
Lab 4: Sample Assignment
, Format File, and Grading Rubric
.
Lab 5: Sample Assignment
, Format File, and Grading Rubric
.
Lab 6: Sample Assignment
, Format File, and Grading Rubric
.
Lab 7: Sample Assignment
, Format File, and Grading Rubric
.
Lab 8: Sample Assignment
, Format File, and Grading Rubric
.
NOTES:
Individual instructors may assign the MATLAB assignments at differing dates throughout the semester.
It is suggested that MATLAB assignments be collected one week after they are assigned.
Strayer University Week 8 Mortgage Approval Time Study Case Study Paper
Case Study 2: Mortgage Approval Time StudyDue Week 8 and worth 190 points Read the following case study:A major financial ...
Strayer University Week 8 Mortgage Approval Time Study Case Study Paper
Case Study 2: Mortgage Approval Time StudyDue Week 8 and worth 190 points Read the following case study:A major financial services company wishes to better understand its mortgage approval process. In particular, the company is interested in learning about the effects of credit history (good versus fair), the size of the mortgage (<$500,000 versus >$500,000), and the region of the United States (western versus eastern) on the amount of time it takes to get a mortgage approved. The database of mortgages approved in the last year is accessed, and a random sample of five approved mortgages is selected for each of the eight combinations of the three variables. The data are shown in the tableMortgage Approval Time Study Credit History Mortgage Size Region Approval Times (Days)Good <$500,000 Western 59 50 64 62 47Fair <$500,000 Western 81 58 69 65 74Good >$500,000 Western 38 52 58 60 65Fair >$500,000 Western 146 159 133 143 129Good <$500,000 Eastern 28 26 38 41 21Fair <$500,000 Eastern 42 53 40 50 64Good >$500,000 Eastern 49 31 49 42 38Fair >$500,000 Eastern 106 115 126 118 138First, conduct an analysis using the following steps:Use the data shown in the table to conduct a design of experiment (DOE) in Microsoft Excel in order determine the nature and magnitude of the effects of the three variables on mortgage approval times. What are the key drivers of this process?Determine the graphical display tool (e.g., Interaction Effects Chart, Scatter Chart, etc.) that you would use to present the results of the DOE that you conducted in Question 1. Provide a rationale for your response. Assess the data sampling method. Our sample contained only five mortgages per combination. Under what circumstances would it have been appropriate to select a larger sample? Is a sample of five mortgages adequate to access the relative magnitudes of the effects of the variables? What sample size would you recommend? What could you learn from a larger sample size? (Hint: Look back at chapter 2, 3, 5, and 6 for discussion of sampling.)Provide other variable responses that might be of interest to measure and study. (Hint: If you were getting a mortgage or a loan, what are the two and most important measures of the process you would have to go through?)Propose one overall recommendation to the financial services company, based on the DOE, that could help reduce mortgage approval times.Use http://research.strayer.edu to identify at least two (2) quality references to support your discussion. Note: Wikipedia and other Websites do not qualify as academic resources.Second, create a PPT presentation to communicate the data analysis you completed. Your presentation must follow these formatting requirements:A PPT presentation with at least 10 slides that include the answers to questions 1 through 5. A reference slide which follows APA format. Check with your professor for any additional instructions.Formatting of the slides should be consistent and easy to read. Cover slide containing the title of the assignment, the student's name, the professor's name, the course title, and the date.Note: The cover slides and the reference slides are not included in the required assignment slides length.The specific course learning outcome associated with this assignment is:Develop recommendations to improve business processes, using statistical tools and analysis.
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Week Three Lab
Read/review the following resources for this activity:OpenStax Textbook: Chapter 2LessonChamberlain University LibraryInte ...
Week Three Lab
Read/review the following resources for this activity:OpenStax Textbook: Chapter 2LessonChamberlain University LibraryInternetSCENARIO/SUMMARYThis week's lab highlights the use of graphics, distributions, and tables to summarize and interpret data.Follow the directions below to find one of the given academic articles from the Chamberlain library and then use that to describe the graphs and tables included. Further, you will describe other ways that the same data could be presented.DELIVERABLESThe deliverable is a Word document with your answers to the questions posed below based on the article you find.REQUIRED SOFTWAREMicrosoft WordInternet access to read articlesSTEPS TO COMPLETE WEEK 3 LABStep 1: Go to the Chamberlain Library at: https://library.chamberlain.edu (Links to an external site.) .Step 2: Click Databases in the Search the Library block. Then choose ProQuest Nursing and Allied Health Database in the dropdown menu.Database Search ExampleStep 3: Below, you will find the titles of six articles from the ProQuest database that show a frequency distribution within the article. CHOOSE ONE OF THE ARTICLES FROM THE LIST BELOW. You will perform two searches using this article.For our first broad-based search, use the underlined words in your chosen article to search and see how many articles from the database contain these underlined words (see the example below the article list for an example search on post-partum depression).Article TitlesOral manifestations in diabetic patients under treatment for ischemic heart diseases: A comparative observational studySystolic blood pressure , diastolic blood pressure, and pulse pressure: An evaluation of their joint effect on mortalityThe Relationship Between Body Mass Index (BMI) and Menstrual Disorders at Different Ages of Menarche and Sex HormonesAdolescents' first tobacco products: Associations with current multiple tobacco product useAssociation of lifestyle modification and pharmacological adherence on blood pressure control among patients with hypertension at Kenyatta National Hospital, Kenya: A crosssectional studyDemographic, parental, and personal factors and youth athletes' concussion -related knowledge and beliefsExample of search on post partum depressionMake sure to checkmark Full Text and Peer Reviewed, and choose Last 12 Months from the drop down list. Also, choose English under the language section.This will yield a list of articles about the topic that you chose. Look to see how many results were found.For our second more narrow search, go back and search for the title of the article that you chose originally. Type A PORTION of the article title into the search bar and find the full PDF for that article.Step 4: Complete your lab by taking the following stepsCopy and paste, or post a screen shot of the frequency distribution from the article you chose at the top of your Word document.On your first search, what terms did you use, and what other things did you mark on the search page before conducting your search? Why did you choose the article that you did? How many articles were found with these search terms? Give the full APA reference of the article you are using for this lab.What data are shown in the frequency distribution and why might it be of interest? Include the size of the classes, noting if they are of a consistent size or not. Also include a conclusion that could be made from the frequency distribution. (1 to 2 paragraphs)How else might these data have been displayed? Discuss pros and cons of 2 other presentation options, such as tables or different graphical displays (1 to 2 paragraphs)Step 5: Be sure your name is on the Word document, save it, and then submit it under "Assignments" and "Week 3: Lab".
Descriptive statistics
Please answer the following questions: If you were given a large data set (i.e., sales over the last year of our top 100 c ...
Descriptive statistics
Please answer the following questions: If you were given a large data set (i.e., sales over the last year of our top 100 customers), what might you be able to do with these data? What might be the benefits of describing the data?This is an example post the professor posted, just to have an idea what professor wants:Example Post:We have to look at the different groups of costumers that buy our products. We can select and divide these groups into categories, for example:What percentage of this data are males?What percentage of this data are females?What percentage are young customers?What percentage of females’ vs males buying certain products?What is the tendency of young buyers?What are the ages of the different costumers?Which locations have the most sales?What are the buying behaviors the costumers have?What costumers buy more frequently?What is the frequency in which costumers buy?What are the ages of the different costumers?What is the product that sells the most? What is the frequency of that particular product being bought by each gender?What are the geographies of the different groups of costumers, by knowing this the company can map potential customers, identifying costumer concentration.By having the knowledge of a particular scenario one can focus his or her products based on what is being sought after. We can organize and describe this data and make a frequency distribution table in which, the costumer’s age can placed in groups or classes determining the frequency; For example, how many costumers from ages 10 to 20 years do we have? How often they buy a product? What kind of products they buy? What is the age group with more frequency of buying certain products? Therefore, allowing the company to canalize its products to specific ages. Another way to organize and visualize this data is to draw a histogram in which the X- axis, is the different age’s groups and the Y- axis is the frequency; this will help the company to find the average age in this data (mean). Through this histogram data vary (range) can be determined. All of this information will aid the company in marketing its products more efficiently. By graphical analysis the company can determine the number of classes, estimate the frequency of the class with the least frequency, and estimate the frequency of the class with the greatest frequency. Having all these information will help the company to measure the data and at the same time visualize the future of its market. Also the organization of this data allows the analyzer to see if specific products sell better at certain times of the year. We can focus which items these 100 customers are not buying, this is important and helpful when deciding the par level of these items. Another way is to use a frequency chart divided in 12 classes equivalent to the months of the year. In this case, the frequency is the number of purchases for each month. If I plotted this data into a histogram I can show the highest months for profit. This is a good way to visualize in order to make easier comparisons. I can use a stem-and-leaf plot to look at the amount of money spent in the entire year. For example, if $411 is the lowest amount spent and $1250 is the highest amount spent, the stem values could range from 4 to 12. By create the plot, we list these stems to the left of a vertical line (Larson & Farber, 2015). This can show any patterns in the amounts of money my top customers spent. Another way is to select a random sample of my top customers and put together a dot plot for the products they bought, this way to see which products are the top sellers; this will be very helpful to increase my sales.To decide future inventory selection, it will be important to collect data pertinent to dates of the purchases, which items were purchase and the quantity of each product.
Week 5 Statistical Significance & Meaningfulness on Sample Statements Paper
Part of your task as a scholar-practitioner is to act as a
critical consumer of research and ask informed ques ...
Week 5 Statistical Significance & Meaningfulness on Sample Statements Paper
Part of your task as a scholar-practitioner is to act as a
critical consumer of research and ask informed questions of published
material. Sometimes, claims are made that do not match the results of
the analysis. Unfortunately, this is why statistics is sometimes
unfairly associated with telling lies. These misalignments might not be
solely attributable to statistical nonsense, but also “user error.” One
of the greatest areas of user error is within the practice of hypothesis
testing and interpreting statistical significance. As you continue to
consume research, be sure and read everything with a critical eye and
call out statements that do not match the results.
For this Assignment, you will examine statistical significance and meaningfulness based on sample statements.To prepare for this Assignment:Review the Week 5 Scenarios found in this week’s Learning Resources and select two of the four scenarios for this Assignment. For additional support, review the Skill Builder: Evaluating P Values and the Skill Builder: Statistical Power,
which you can find by navigating back to your Blackboard Course Home
Page. From there, locate the Skill Builder link in the left navigation
pane. For this Assignment:Critically evaluate the two scenarios you selected based upon the following points:Critically evaluate the sample size.Critically evaluate the statements for meaningfulness.Critically evaluate the statements for statistical significance.Based on your evaluation, provide an explanation of the implications for social change.Use proper APA format and citations, and referencing.Week 5 Scenarios:1.The p-value was slightly above conventional threshold, but was described as “rapidly approaching significance” (i.e., p=.06). An independent samples t test was used to determine whether student satisfaction levels in a quantitative reasoning course differed between the traditional classroom and on-line environments.The samples consisted of students in four face-to-face classes at a traditional state university (n=65) and four online classes offered at the same university (n=69). Students reported their level of satisfaction on a five-point scale, with higher values indicating higher levels of satisfaction.Since the study was exploratory in nature, levels of significance were relaxed to the .10 level. The test was significant t(132) = 1.8, p= .074, wherein students in the face-to-face class reported lower levels of satisfaction (M= 3.39, SD= 1.8)than did those in the online sections (M= 3.89, SD= 1.4).We therefore conclude that on average, students in online quantitative reasoning classes have higher levels of satisfaction.The results of this study are significant because they provide educators with evidence of what medium works better in producing quantitatively knowledgeable practitioners.2.A results report that does not find any effect and also has small sample size (possibly no effect detected due to lack of power). A one-way analysis of variance was used to test whether a relationship exists between educational attainment and race. The dependent variable of education was measured as number of years of education completed. The race factor had three attributes of European American (n=36), African American (n=23) and Hispanic (n=18). Descriptive statistics indicate that on average, European Americans have higher levels of education (M=16.4, SD=4.6), with African Americans slightly trailing (M= 15.5, SD=6.8) and Hispanics having on average lower levels of educational attainment (M=13.3, SD=6.1). The ANOVA was not significant F(2,74) = 1.789, p= .175, indicating there are no differences in educational attainment across these three races in the population.The results of this study are significant because they shed light on the current social conversation about inequality. 3.Statistical significance is found in a study, but the effect in reality is very small (i.e., there was a very minor difference in attitude between men and women). Were the results meaningful?An independent samples t test was conducted to determine whether differences exist between men and women on cultural competency scores. The samples consisted of 663 women and 650 men taken from a convenience sample of public, private,and non-profit organizations. Each participant was administered an instrument that measured his or her current levels of cultural competency. The © 2016 Laureate Education, Inc. Page 2of 2cultural competency score ranges from 0 to 10,with higher scores indicating higher levels of cultural competency. The descriptive statistics indicate women have higher levels of cultural competency (M= 9.2, SD= 3.2) than men (M= 8.9, SD=2.1). The results were significant t(1311) = 2.0, p<.05, indicating that women are more culturally competent than are men. These results tell us that gender-specific interventions targeted toward men may assist in bolstering cultural competency. 4.A study has results that seem fine, but there is no clear association to social change. What is missing? A correlation test was conducted to determine whether a relationship exists between level of income and job satisfaction. The sample consisted of 432 employees equally represented across public, private,and non-profit sectors. The results of the test demonstrate a strong positive correlation between the two variables,r=.87, p<.01, showing that as level of income increases, job satisfaction increases as well.
Stratford University Mathematics Probability Questions Worksheet
A1. Week 3 Post (300+ words):Think of some discrete random variable you observe on a regular basis. For example, it coul ...
Stratford University Mathematics Probability Questions Worksheet
A1. Week 3 Post (300+ words):Think of some discrete random variable you observe on a regular basis. For example, it could be the (rounded) number of hours you sleep, how many gallons of gas are in your car when you get into it, how many boxes of cereal are in your house, how many days between grocery shopping, etc. (just make sure it takes only integer values). Try to list all of the possible values that this discrete random variable can take. If you can, collect some frequency data – give the relative frequency table and use this as an estimate of the probability distribution. Calculate the expected value and the standard deviation for this probability distribution. Interpret these parameters, and discuss whether they make sense based on your experience.B1. Find the mean of the given probability distribution.2. Find the mean of the given probability distribution.The random variable x is the number of houses sold by a realtor in a single month at the Sendsom's Real Estate office. Its probability distribution is as follows.5. Provide an appropriate response.In a game, you have a probability of winning and a probability of losing What is your expected value?6. Provide an appropriate response.A contractor is considering a sale that promises a profit of $26,000 with a probability of 0.7 or a loss (due to bad weather, strikes, and such) of $8000 with a probability of 0.3. What is the expected profit?7. Find the indicated probability. Round to three decimal places.A test consists of 10 true/false questions. To pass the test a student must answer at least 6 questions correctly. If a student guesses on each question, what is the probability that the student will pass the test?8. Find the indicated probability. Round to three decimal places.A machine has 11 identical components which function independently. The probability that a component will fail is 0.2. The machine will stop working if more than three components fail. Find the probability that the machine will be working.9. Find the indicated probability. Round to three decimal places.In a certain college, 33% of the physics majors belong to ethnic minorities. If 10 students are selected at random from the physics majors, that is the probability that no more than 6 belong to an ethnic minority?10. Find the indicated probability. Round to three decimal places.Find the probability of at least 2 girls in 6 births. Assume that male and female births are equally likely and that the births are independent events.
MATH 244 Rutgers University Differential Equations Lab Reports
MATLAB in Math 244
Math 244 uses MATLAB assignments to given an opportunity for students to explore the computational side ...
MATH 244 Rutgers University Differential Equations Lab Reports
MATLAB in Math 244
Math 244 uses MATLAB assignments to given an opportunity for students to explore the computational side of differential equations and see how MATLAB can be used to solve and visualize these equations. Assignments and due dates will be decided by individual instructors. In order to complete the assignments, students will need the supplemental MATLAB functions as well as the format files provided here.
In general, it is assumed that students in the Engineering major will already have some exposure to MATLAB before this class, both in their major classes and in Math 251. If a refresher is needed on this material, you can consult the webpage here or discuss it with your instructor. There are also details provided for these particular lab assignments on the webpage here. It may also be helpful to complete the Lab 0 assignment here
to get practice on some of the basics needed to complete these assignments. The MATLAB documentation for any method you want to use (which will come up if you Google it) is also very good once you get a handle on the basic syntax of MATLAB.
Supplemental Files (zip file containing 11 MATLAB functions)
Lab 1: Sample Assignment
, Format File, and Grading Rubric
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Lab 2: Sample Assignment
, Format File, and Grading Rubric
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Lab 3: Sample Assignment
, Format File, and Grading Rubric
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Lab 4: Sample Assignment
, Format File, and Grading Rubric
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Lab 5: Sample Assignment
, Format File, and Grading Rubric
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Lab 6: Sample Assignment
, Format File, and Grading Rubric
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Lab 7: Sample Assignment
, Format File, and Grading Rubric
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Lab 8: Sample Assignment
, Format File, and Grading Rubric
.
NOTES:
Individual instructors may assign the MATLAB assignments at differing dates throughout the semester.
It is suggested that MATLAB assignments be collected one week after they are assigned.
Strayer University Week 8 Mortgage Approval Time Study Case Study Paper
Case Study 2: Mortgage Approval Time StudyDue Week 8 and worth 190 points Read the following case study:A major financial ...
Strayer University Week 8 Mortgage Approval Time Study Case Study Paper
Case Study 2: Mortgage Approval Time StudyDue Week 8 and worth 190 points Read the following case study:A major financial services company wishes to better understand its mortgage approval process. In particular, the company is interested in learning about the effects of credit history (good versus fair), the size of the mortgage (<$500,000 versus >$500,000), and the region of the United States (western versus eastern) on the amount of time it takes to get a mortgage approved. The database of mortgages approved in the last year is accessed, and a random sample of five approved mortgages is selected for each of the eight combinations of the three variables. The data are shown in the tableMortgage Approval Time Study Credit History Mortgage Size Region Approval Times (Days)Good <$500,000 Western 59 50 64 62 47Fair <$500,000 Western 81 58 69 65 74Good >$500,000 Western 38 52 58 60 65Fair >$500,000 Western 146 159 133 143 129Good <$500,000 Eastern 28 26 38 41 21Fair <$500,000 Eastern 42 53 40 50 64Good >$500,000 Eastern 49 31 49 42 38Fair >$500,000 Eastern 106 115 126 118 138First, conduct an analysis using the following steps:Use the data shown in the table to conduct a design of experiment (DOE) in Microsoft Excel in order determine the nature and magnitude of the effects of the three variables on mortgage approval times. What are the key drivers of this process?Determine the graphical display tool (e.g., Interaction Effects Chart, Scatter Chart, etc.) that you would use to present the results of the DOE that you conducted in Question 1. Provide a rationale for your response. Assess the data sampling method. Our sample contained only five mortgages per combination. Under what circumstances would it have been appropriate to select a larger sample? Is a sample of five mortgages adequate to access the relative magnitudes of the effects of the variables? What sample size would you recommend? What could you learn from a larger sample size? (Hint: Look back at chapter 2, 3, 5, and 6 for discussion of sampling.)Provide other variable responses that might be of interest to measure and study. (Hint: If you were getting a mortgage or a loan, what are the two and most important measures of the process you would have to go through?)Propose one overall recommendation to the financial services company, based on the DOE, that could help reduce mortgage approval times.Use http://research.strayer.edu to identify at least two (2) quality references to support your discussion. Note: Wikipedia and other Websites do not qualify as academic resources.Second, create a PPT presentation to communicate the data analysis you completed. Your presentation must follow these formatting requirements:A PPT presentation with at least 10 slides that include the answers to questions 1 through 5. A reference slide which follows APA format. Check with your professor for any additional instructions.Formatting of the slides should be consistent and easy to read. Cover slide containing the title of the assignment, the student's name, the professor's name, the course title, and the date.Note: The cover slides and the reference slides are not included in the required assignment slides length.The specific course learning outcome associated with this assignment is:Develop recommendations to improve business processes, using statistical tools and analysis.
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