Question

(3 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 ABCDEFGHIJ Test A 122 100 92 95 76 108 108 97 85 114 Test B 123 98 89 98 79 106 111 98 88 110 1. Consider (Test A - Test B). Use a 0.01 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 z B. Matched Pairs C. Two Samplet (b) The test statistic is (c) Is there sufficient evidence to support the claim that people do better on the second test? A. Yes B. No 2. Construct a 99% confidence interval for the mean of the differences. Again, use (Test A - Test B). <<

Answer 1

There is not subiccent eridance to conclude that people do better selend test. 2) Centidance iutenal for u ł + talagnat x sal in 2.797 sto -0.3+ to.ros, gx -0.3 + 3.2498 0.8822 -0.3 + 2.867 -3.167 cud <2.567