A medical researcher conducts a significance test whenever she analyzes a new data set. Over time, she

Question:

A medical researcher conducts a significance test whenever she analyzes a new data set. Over time, she conducts 100 independent tests.
a. Suppose the null hypothesis is true in every case. What is the of the number of times she rejects the null hypothesis at the 0.05 level?
b. Suppose she rejects the null hypothesis in five of the tests. Is it plausible that the null hypothesis is correct in every case? Explain.
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...