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Consumer Reports uses a survey of readers to obtain customer satiofaction ratings for the nations largest retailers (Consumer Reperts, 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 cushomers ane shown below Excel Files data10-07.xs Walmart Target 25 -79 ろ-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 b.Assume that experience with the Consumer Reports satistaction rating scale indicates thet a population standard test and report the p-value. Round your answer to four decimal places deviation of 12 is a reasonable assumption for both retailers Conduct the bypothesis
Consider the following hypothesis test. The following results are from independent samples taken from two populations Sample 1 Sample 2 n2-40 x2 10.1 X1# 13.6 S1 5.5 a. What is the value of the test statistic (to 2 decimals)? 8.6 2.11 b. What is the degrees of freedom for the t distribution (to 1 decimal)? 73 c. What is the p-value range? between .02 and .05 d. Ata-.05, what is your conclusion? p-value is less than or equal to 0.05, rejtHo
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р-value 10.013 (2) desreeno freedom X, : 42.5, 게2-22, 3, df= 14.9-

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