Posted by **Anonymous** on Saturday, January 14, 2012 at 12:16pm.

15. Based on the information given for each of the following studies, decide

whether to reject the null hypothesis. For each, give (a) the Z-score cutoff (or cutoffs) on the comparison distribution at which the null hypothesis should be rejected, (b) the Z score on the comparison distribution for the sample score, and(c) your conclusion. Assume that all populations are normally distributed.

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