Based on the information given for each of the following studies, decide whether to reject the null

Question:

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 at which the null hypothesis should be rejected
(b) The Z score on the comparison for the sample score.
(c) Your conclusion. Assume that all populations are normally distributed.

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...