A newlywed couple is trying to choose one of two neighborhood supermarkets for their grocery shopping. They decide to randomly s
elect 20 items, check their price at each store, then conduct a test to determine if, on average, one store is significantly less expensive than the other. What test should they conduct?
From the question, the data are blocked by the grocery items and thus we need to test whether there is a significant mean difference between two sets of paired data by defining the paired difference and also defining the hypothesis. Thus, the test i will recommend that suits this purpose is the "matched pairs t-test"
