Homework Help is Here – Start Your Trial Now!
Math
Statistics
Consumer Reports uses a survey of readers to obtain customer satisfaction ratings for the nation's largest retailers (Consumer Reports, March 2012). Each survey respondent is asked to rate a specified retailer in terms of six factors: quality of products, selection, value, checkout efficiency, service, and store layout. An overall satisfaction score summarizes the rating for each respondent with 100 meaning the respondent is completely satisfied in terms of all six factors. Sample data representative of independent samples of Target and Walmart customers are shown below. Target Walmart n1 = 25 n2 = 30 X1 = 79 X 2 = 71 a. Formulate the null and alternative hypotheses to test whether there is a difference between the population mean customer satisfaction scores the two retailers. Ho : H 1- H 2 equal to 0 Ha : H 1- H 2 not equal to 0 b. Assume that experience with the Consumer Reports satisfaction rating scale indicates that a population standard deviation of 12 is a reasonable assumption for both retailers. Conduct the hypothesis test and report the p-value. Round your answer to four decimal places. Use z-table. p-value = At a .05 level of significance what is your conclusion? The input in the box below will not be graded, but may be reviewed and considered by your instructor. blank c. Provide a 95% confidence interval for the difference between the population mean customer satisfaction scores for the two retailers. Which retailer, if either, appears to have the greater customer satisfaction? Target

Consumer Reports uses a survey of readers to obtain customer satisfaction ratings for the nation's largest retailers (Consumer Reports, March 2012). Each survey respondent is asked to rate a specified retailer in terms of six factors: quality of products, selection, value, checkout efficiency, service, and store layout. An overall satisfaction score summarizes the rating for each respondent with 100 meaning the respondent is completely satisfied in terms of all six factors. Sample data representative of independent samples of Target and Walmart customers are shown below. Target Walmart n1 = 25 n2 = 30 X1 = 79 X 2 = 71 a. Formulate the null and alternative hypotheses to test whether there is a difference between the population mean customer satisfaction scores the two retailers. Ho : H 1- H 2 equal to 0 Ha : H 1- H 2 not equal to 0 b. Assume that experience with the Consumer Reports satisfaction rating scale indicates that a population standard deviation of 12 is a reasonable assumption for both retailers. Conduct the hypothesis test and report the p-value. Round your answer to four decimal places. Use z-table. p-value = At a .05 level of significance what is your conclusion? The input in the box below will not be graded, but may be reviewed and considered by your instructor. blank c. Provide a 95% confidence interval for the difference between the population mean customer satisfaction scores for the two retailers. Which retailer, if either, appears to have the greater customer satisfaction? Target

MATLAB: An Introduction with Applications
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
icon
Related questions
Question

just need b answered. 

Consumer Reports uses a survey of readers to obtain customer satisfaction ratings for the nation's largest retailers (Consumer Reports, March 2012). Each survey respondent is asked to rate a specified retailer in terms of six factors: quality of products, selection, value, checkout efficiency, service, and store layout. An overall satisfaction score summarizes the rating for each respondent with 100 meaning the respondent is completely satisfied in terms of all six factors. Sample data representative of independent samples of Target and Walmart customers are shown below. Target Walmart n1 = 25 n2 = 30 X1 = 79 X 2 = 71 a. Formulate the null and alternative hypotheses to test whether there is a difference between the population mean customer satisfaction scores the two retailers. Ho : H 1 - H 2 equal to 0 Ha : H 1 - H 2 not equal to 0 b. Assume that experience with the Consumer Reports satisfaction rating scale indicates that a population standard deviation of 12 is a reasonable assumption for both retailers. Conduct the hypothesis test and report the p-value. Round your answer to four decimal places. Use z-table. p-value = At a .05 level of significance what is your conclusion? The input in the box below will not be graded, but may be reviewed and considered by your instructor. blank c. Provide a 95% confidence interval for the difference between the population mean customer satisfaction scores for the two retailers. Which retailer, if either, appears to have the greater customer satisfaction? Target
Transcribed Image Text:Consumer Reports uses a survey of readers to obtain customer satisfaction ratings for the nation's largest retailers (Consumer Reports, March 2012). Each survey respondent is asked to rate a specified retailer in terms of six factors: quality of products, selection, value, checkout efficiency, service, and store layout. An overall satisfaction score summarizes the rating for each respondent with 100 meaning the respondent is completely satisfied in terms of all six factors. Sample data representative of independent samples of Target and Walmart customers are shown below. Target Walmart n1 = 25 n2 = 30 X1 = 79 X 2 = 71 a. Formulate the null and alternative hypotheses to test whether there is a difference between the population mean customer satisfaction scores the two retailers. Ho : H 1 - H 2 equal to 0 Ha : H 1 - H 2 not equal to 0 b. Assume that experience with the Consumer Reports satisfaction rating scale indicates that a population standard deviation of 12 is a reasonable assumption for both retailers. Conduct the hypothesis test and report the p-value. Round your answer to four decimal places. Use z-table. p-value = At a .05 level of significance what is your conclusion? The input in the box below will not be graded, but may be reviewed and considered by your instructor. blank c. Provide a 95% confidence interval for the difference between the population mean customer satisfaction scores for the two retailers. Which retailer, if either, appears to have the greater customer satisfaction? Target
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS