Answer Happy

You may need to use the appropriate appendis talle er technology to answer this question A consumer product testing organization uses a survey of readers to obtain customer satisfaction ratings for the nation's largest supermarkets. Each survey respondent is asked to rate a specified supermarket based on a variety of factors uchaty of products, selection, value, checkout offciency, service, and store layout. An overal satisfaction score summarizes the rating for each respondent with 100 meaning the respondent is completely satisfied in terme of all factors. Suppose sample data representative of independent samples of two supermarkets customers are shown below. H₂! Supermarket 1 Supermarket 2 -200 ₂-300 % -28 (a) Formulate the nul and alternative hypotheses to test whether there is a difference between the population mean customer satisfaction scores for the two retailers. (Let the population mean satisfaction score for Supermarket 1' customers, and let the population mean satisfaction score for Supermarket 2's customers, Exter for as needed.) H₂! 3₁ - 09 (D) Assume that experience with the satisfaction rating scale indicates that a population standard deviation of 16 is a reasonable assumption for both retailers. Conduct the hypothes Calculate the test statistic. (Use ₂. Round your answer to two decimal places. Report the p-value. (Round your arower to four decimal places) P-value 0.05 level of significance what is your conclusion? Reject There is not sufficient evidence to condude that the population mean satisfaction scores after for the two retalers O Do not reject H There is sufficest evidence to conclude that the population mean satisfaction scores differ for the two retailers. Do not reject Mg. There is not sufficient evidence to conclude that the population mean satisfaction scores differ for the two retalers Reject Ho There is sufficient evidence to conclude that the population mean satisfaction scores differ for the two retalers to which retaler, if ether, appears to have the greater customer satisfaction? O Supermarket 1 O Supermarket 2 O nether Provide a 95% confidence interval for the difference between the population mean customer satisfaction scores for the two retailers, (Use x,-X. Round your answers to two decimal places)