Question: Do you prefer taking tests on paper or online? A college instructor gave identical tests to two randomly sampled groups of 35 students. One group

Do you prefer taking tests on paper or online?

A college instructor gave identical tests to two randomly sampled groups of 35 students. One group took the test on paper and the other took it online. Following are the test scores. Paper 79 75 63 79 74 69 71 69 78 80 22426

49 78 73 81 70 65 60 74 64 64 57 65

a. Construct a 95% confidence interval for the difference in mean scores between paper and online tests.

b. The instructor claims that the mean scores are the same for both the paper and the online versions of the test. Does the confidence interval contradict this claim?

Paper 79 75 63 79 74 69 71 69 78 80 22426 49 78 73 81 70 65 60 74 64 64 57 65 61 58 92 66 71 68 67 81 76 67 49 56 45

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