Find variance of distribution of the means of change scores

Reference no: EM13155780

A researcher conducts a t test for dependent means with 10 subjects. If the estimated population variance of the change scores is 20, what would the variance of the distribution of the means of change scores be?

A. 20/10=2.0
B. 20/9=2.2
C. 400/10=40.0
D. 400/9=44.4

Reference no: EM13155780

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