Question 7 D Show all your work. Indicate clearly the methods you use, because you will be scored on the correctness of your meth ds as well as on the accuracy and completeness of your results and explanations. A random sample of 100 people from region A and a random sample of 100 people from region B were surveyed about their grocery-shopping habits. From the region A sample, 16 percent of the people indicated that they shop for groceries online. From the region B sample, 24 percent of the people indicated that they shop for groceries online. At the significance level of a = 0.05, do the data provide convincing statistical evidence that there is a difference between the two regions for the population proportions of people who shop online for groceries? Complete the appropriate inference procedure to support your answer. В I x X2 5

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