Need help with part b & 2.

TEST STATISTIC DOES NOT = -1.153

FIRST CONFIDENCE INTERVAL IS NOT = -3.3338

(2 points) Ten randomly selected people took an IQ test A, and next day they took a very similar IQ test B. Their scores are shown in the table below. Person A B C D E F G H Test A 96 76 105 96 116 82 102 120 92 111 Test B 94 77 111 97 113 83 107 120 93 110 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? A. Two Sample t OB. Two Sample z C. Matched Pairs (b) The test statistic is (c) The critical value is -1.842. Construct a 95% confidence interval for the mean of the differences. Again, use (Test A - Test B). CH