1. You are conducting a repeated measure design for a two-sample dependent t-tes

Question

1. You are conducting a repeated measure design for a two-sample dependent t-test. This means that the same person took the measure twice. The first measure was before the intervention (pre-test) and the second measure was after the intervention (post-test).

Using the following information, what is the upper bound for a confidence interval of difference scores? Round to the second decimal place, if needed.

The sample mean of difference scores is 75, the standard error is 4, and the critical t is 1.7.

Explanation / Answer

Margin of error = 4*1.7 = 6.8

Upper Bound = Sample Mean + Margin of Error

Upper Bound = 75+6.8 = 81.8

So, answer is 81.80

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