If the standard deviation of the differences was 05 find a


Suppose that ten identical twins were reared apart and the mean difference between the high school GPA of the twin brought up in wealth and the twin brought up in poverty was 0.07. If the standard deviation of the differences was 0.5, find a 95% confidence interval for the difference. Assume the distribution of GPA's is approximately normal.

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Basic Statistics: If the standard deviation of the differences was 05 find a
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