Word Problem for Statistics and Probability

L4aker

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Please answer this for me!

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 13 supermarkets from Region 1 had mean sales of 80.9 with a standard deviation of 7.8. A random sample of 17 supermarkets from Region 2 had a mean sales of 72.7 with a standard deviation of 6. Does the test marketing reveal a difference in potential mean sales per market in Region 2? Let μ1 be the mean sales per market in Region 1 and μ2 be the mean sales per market in Region 2. Use a significance level of α=0.02 for the test. Assume that the population variances are not equal and that the two populations are normally distributed.

Step 2 of 4 :
Compute the value of the t test statistic. Round your answer to three decimal places.
 
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