A test of abstract reasoning is given to a random sample of students before and after...

A test of abstract reasoning is given to a random sample of students before and after they completed a formal logic course. The results are given below. Construct a 95% confidence interval for the mean difference in tests scores. Research has shown that the distribution of such differences is approximately normal. Interpret your result.

Before	74	83	75	82	80	63	93	84	91	77
After	73	77	70	77	74	67	95	83	84	75

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orchestra answered 2 years ago

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