If the sample size is held constant, which of the following will produce the widest 90% confidence interval for the population mean difference for a repeated-measures study?

A) ?MD = 5 with s2 = 5 for the difference scores
B) ?MD = 5 with s2 = 10 for the difference scores
C) ?MD = 3 with s2 = 10 for the difference scores
D) ?MD = 3 with s2 = 20 for the difference scores


D

Psychology

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