The Wall Street Journal Corporate Perceptions Study surveys readers and asks how each rates the quality of management and the reputation of the company for over 250 worldwide corporations. Both the quality of management and the reputation of the company were rated on an excellent, good, and fair categorical scale. Assume the sample data for 200 respondents below applies to this study.### Data Summary**Excel File:** [data12-13.xlsx]| Quality of Management / Reputation of Company | Excellent | Good | Fair ||-----------------------------------------------|-----------|------|------|| Excellent | 40 | 25 | 5 || Good | 35 | 35 | 10 || Fair | 25 | 10 | 15 |### Analysis Tasks**a.** Use $\alpha = 0.05$ level of significance and test for independence of the quality of management and the reputation of the company.- Compute the value of the $\chi^2$ test statistic (to 2 decimals). Do not round intermediate calculations.- Use Table 3 of Appendix B to find the $p$-value.- Indicate your conclusion by selecting whether the rating for the quality of management is independent or dependent on the rating for the reputation of the company.**b.** If there is a dependence or association between the two ratings, discuss and use probabilities to justify your answer.- Explain which ratings combination is most probable based on the data (e.g., both excellent, both good, etc.).### Instructions1. Download the data file for detailed analysis.2. Calculate the $\chi^2$ statistic.3. Determine the $p$-value using Table 3 of Appendix B.4. Select appropriate conclusions for parts a and b.

Given : Excellent Good Fair Total Excellent 40 25 5 70 Good 35 35 10 80 Fair 25 10 15 50…

The Wall Street Journal Corporate Perceptions Study surveys readers and asks how each rats the quality of management and the reputation of the company for over 250 worldwide corporations. Both the quality of management and the reputation of the company were rated on an excellent, good, and fair categorical scale. Assume the sample data for 200 respondents below applies to this study. Excel File: data12-13.xlsx Reputation of Company Quality of Management Excellent Good Fair Excellent 40 25 Good 35 35 10 Fair 25 10 15 a. Use a = 0.05 level of significance and test for independence of the quality of management and the reputation of the company. Compute the value of the x test statistic (to 2 decimals). Do not round intermediate calculations. Use Table 3 of Appendix B to find the p-value. The p-value is - Select your answer - What is your conclusion? Conclude that the rating for the quality of management is Select your answer - vof the rating for the reputation of the company. b. If there is a dependence or association between the two ratings, discuss and use probabilities to justify your answer. The highest probabilities are that the two variables will - Select your answer -

The Wall Street Journal Corporate Perceptions Study surveys readers and asks how each rats the quality of management and the reputation of the company for over 250 worldwide corporations. Both the quality of management and the reputation of the company were rated on an excellent, good, and fair categorical scale. Assume the sample data for 200 respondents below applies to this study. Excel File: data12-13.xlsx Reputation of Company Quality of Management Excellent Good Fair Excellent 40 25 Good 35 35 10 Fair 25 10 15 a. Use a = 0.05 level of significance and test for independence of the quality of management and the reputation of the company. Compute the value of the x test statistic (to 2 decimals). Do not round intermediate calculations. Use Table 3 of Appendix B to find the p-value. The p-value is - Select your answer - What is your conclusion? Conclude that the rating for the quality of management is Select your answer - vof the rating for the reputation of the company. b. If there is a dependence or association between the two ratings, discuss and use probabilities to justify your answer. The highest probabilities are that the two variables will - Select your answer -

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

In 2015, Addison Group and Kelton surveyed the work preferences and attitudes of 1081 working adults spread over three generations-Baby Boomers, Generation X, and Millennials (Society for Human Resource Management website). One question asked individuals if they would leave their current job to make more money at another job. The file Millennials contains the sample data, which is also summarized in the following table. Click on the datafile logo to reference the data. DATA file Leave Job for More Money? Yes No Baby Boomer 137 213 Generation 7.85 What is the p-value? Use Table 3 of Appendix B. The p-value is between 0.005 and 0.01 Using a 0.05 level of significance, what is your conclusion? Conclude interest in leaving job for more money is not Generation X 171 199 Millennial 175 186 Conduct a test of independence to determine whether interest in leaving a current job for more money is independent of employee generation. Compute the value of the X² test statistic (to 2 decimals). Do…
In a study looking at undergraduate students’ perceptions of sense of community at their university, a researcher hypothesizes that the farther away students live from campus (in miles), the less they feel they are part of the university community. The researcher collected data for the following two variables – miles from campus and part of community (rating from 1-10 of how much they felt part of the university community). Proposed analysis (the kind of test) and why you chose the analysis: Scales of measurement (i.e., nominal, ordinal, interval or ratio) for variable(s) that will be used in the analysis: Null and alternative hypotheses (based on context of study) in symbols: Test assumptions and make a decision Inferential statistic(s) and p-value(s): Decision: conclusion Based on your decision, identify and explain the type of error you could be making with respect to the conclusions of the study
Charlie isinterested in whether elementary school students, middle school students, or high school students spend more time reading in the summer. In the beginning of the school year he asks 20 elementary school students, 15 middle school students and 40 high school students to report the number of pages they read over the summer. What statistical test should Charlie use to test his research question?
he Computer Anxiety Rating Scale (CARS) measures an individual’s level of computer anxiety, on a scale from 20 (no anxiety) to 100 (highest level of anxiety). Researchers at Miami University administered CARS to 172 business students. One of the objectives of the study was to determine whether there are differences in the amount of computer anxiety experienced by students with different majors. They found the following: Major n Mean Marketing 19 44.37 Management 11 43.18 Other 14 42.21 Finance 45 41.80 Accountancy 36 37.56 MIS 47 32.21 (A) Complte the following ANOVA table: Source of Variation SS df MS F-ratio F-crit Between groups 3172 5 634.4 4.9567 2.2685 Within groups 21246 166 127.988 Total 24418 171 (A) At the 0.05 level of significance, is there evidence of a difference in the mean computer anxiety…
What is the mode, if any, for the dataset of 99;40;59;55;77;59;75;69;69;92;60;58;75;83?
Part c please
If there are 13 data points in a set of data, what is the number of degrees of freedom?
double check + help
You may need to use the appropriate technology to answer this question. The Wall Street Journal Corporate Perceptions Study 2011 surveyed readers and asked how each rated the quality of management and the reputation of the company for over 250 worldwide corporations. Both the quality of management and the reputation of the company were rated on an excellent, good, and fair categorical scale. Assume the sample data for 200 respondents below applies to this study. Reputation of Company Quality of Management Excellent Good Fair Excellent 40 25 8 Good 35 35 10 Fair 25 10 12 (a) Use a 0.05 level of significance and test for independence of the quality of management and the reputation of the company. State the null and alternative hypotheses. O H: Quality of management is independent of the reputation of the company. H: Quality of management is not independent of the reputation of the company. O H: Quality of management is independent of the reputation of the H: The proportion of companies…
A sample survey by Comcast asked a random sample of customers about use of the Internet and about the type of community they lived in. Here are the results: Internet Users: Rural: 433 Suburban: 1072 Urban: 536 Nonusers: Rural: 463 Suburban: 627 Urban: 388 Is there a relationship between Internet use and community type? Give statistical evidence to support your findings.
The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.
Bank of America's Consumer Spending Survey collected data on annual credit card charges in seven different categories of expenditures: transportation, groceries, dining out, household expenses, home furnishings, apparel, and entertainment. Using data from a sample of 42 credit card accounts, assume that each account was used to identify the annual credit card charges for groceries (population 1) and the annual credit card charges for dining out (population 2). Using the difference data, the sample mean difference was d = $850, and the sample standard deviation was Sd = $1,123. a. Formulate the null and alternative hypotheses to test for no difference between the population mean credit card charges for groceries and the population mean credit card charges for dining out. Hoμd Haμd - Select your answer - - Select your answer - b. Use a 0.05 level of significance. Can you conclude that the population means differ? - Select your answer - ✓ What is the p-value? (to 6 decimals) c. Which…