You conduct an analysis comparing two online textbook stores…
You conduct an analysis comparing two online textbook stores on the prices they charge (in dollars) for new books. You sample 40 textbooks and obtain the price for each textbook at each online textbook store. Below are the results. Sample mean of the paired differences = 8 Standard deviation of the paired differences = 15 Standard error for the mean of the paired differences = 2.37Which of the following is the correct test statistic for this analysis?