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

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
College Algebra
College Algebra
Algebra
ISBN:
9781938168383
Author:
Jay Abramson
Publisher:
OpenStax
SEE MORE TEXTBOOKS