Ten randomly selected people took an IQ test A, and next day they took a very similar 1Q test B. Their scores are shown in the table below. Person A BCDEFGHIJ Test A84799611796111108 12291103 Test B87819712194110111 12391 105 1. Consider (Test A - Test B). Use a 0.05 significance level to test the claim that people do better on the second test than they do on the first. (Note: You may wish to use software.) (a) What test method should be used? OA. Two Sample z OB. Two Samplet C. Matched Pairs (b) The test statistic is (c) The critical value is (d) Is there sufficient evidence to support the claim that people do better on the second test? A. Yes OB. No 2. Construct a 95% confidence interval for the mean of the differences. Again, use (Test A - Test B).

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