1. the marketing manager of a firm that produces laundry products decides to test market a new laundry product in each of the firm's two sales regions. he wants to determine whether there will be a difference in mean sales per market per month between the two regions. a random sample of 12 supermarkets from region 1 had mean sales of 88 with a standard deviation of 5.6. a random sample of 17 supermarkets from region 2 hacd a mean sales of 76.9 with a standard deviation of 6.3. does the test marketing reveal a difference in potential mean sales per market in region 2?
2. let be the mean sales per market in region 1 and î¼2 be the mean sales per market in region 2. use a significance level of î± = 0.05 for the test. assume that the population variances are not equal and that the two populations are normally distributed. what is the value of the t-statistic? (round your answer to two decimal places)