37 For this experiment what is the correct hypothesis test w

37. For this experiment, what is the correct hypothesis test with the corresponding null/alternative? a. Independent Two-Sample Hypothesis Test b. Independent Two-Sample Hypothesis Test c. Paired Two Sample T-Test (Let muD = mean difference in price of Amazon-SJU) d. Paired Two Sample T-Test (Let muD = mean difference in price of Amazon-SJU) 38. Assuming that the Minitab output (above) is for the correct type of hypothesis test, what is the conclusion for the test? Use alpha = 0.05. a. Not enough evidence to reject the null. The price of textbooks at the SJU bookstore could be the same as the price of textbooks on Amazon.com. b. Reject the null. The average price of textbooks at Amazon.com is different than the average price of textbooks at the SJU bookstore. e. Reject the null. Textbooks are cheaper, on average, at the SJU bookstore than Amazon.com d. Reject the null. Textbooks are cheaper, on average, at Amazon.com than the SJU bookstore.

Solution

37. Answer is c.
It is a paired two sample t test because the prices are obtained using the same books at both places, and they are testing to see if they save money, (the prices are less at Amazon). They are not testing for a differnece.

38. answer is D.
Since P value is less than .05, you reject the null hypothesis, and you were testing for Amazon being less than SJU on average.