Problem 4. (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. PersonABCDEFG H | J Test A 113 88 96 86130 7510810896104 Test B 11889 97 86 130 73 110 111 98 106 1. Use a 0.05 significance level to test the claim that people do better on the second test than they do on the first. The test statistic is The critical vaue is Is there sufficient evidence to support the claim that people do better on the second test? 0 A.No O B. Yes 2. Construct a 95 % confidence interval for the population mean of all differences, Test A - Test B.