practice questions.pdf - Question 1 Consumer Reports uses a survey of readers to obtain customer satisfaction ratings for the nations largest

practice questions.pdf - Question 1 Consumer Reports uses a...

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Question 1 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 n 1 = 25 1 = 79 Walmart: n 2 = 30 2 = 71 Formulate the null and alternative hypotheses to test whether there is a difference between the population mean customer satisfaction scores for the two retailers.
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