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7.(18 points )six randomly selected students took IQ test A, and the next day the took a very similar IQ test B. Their scores are show in the table below Student 1 2 3 4 5 16 Test A 121 93 71 119 104 100 theaste er Test 8 121 91 72 122 108 100 Let difference = test score A- test Score B . Assume that scores in test A and test B are normally distribution. Test, at 5% level of significance, on average, do people get high score in test B than test A. Test at the 1% level of significance, weather the data set provide enough evidence to support that people get high score in test B than test A(a) (2 points ) find the point estimate of difference. (b) (2 points ) set up hypothesis. thpast er (c) (4 points) list formula of standardized test statistic and calculate it. (d)(4 points ) find rejection region and do decision. (c) (4 points) find observed significance level (p-value) and do decision. (e) (2 point )make conclusion. DELL