Two populations are described in each of the cases that follow. In which cases would it be

Question:

Two populations are described in each of the cases that follow. In which cases would it be appropriate to apply the small-sample t-test to investigate the difference between the population means?
a. Population 1: Normal with variance σ21 Population 2: Skewed to the right with variance σ22 = σ21
b. Population 1: Normal with variance σ21 Population 2: Normal with variance σ22 σ21
c. Population 1: Skewed to the left with variance σ21 Population 2: Skewed to the left with variance σ21 = σ21
d. Population 1: Normal with variance σ21 Population 2: Normal with variance σ22 = σ21
e. Population 1: Uniform with variance σ21 Population 2: Uniform with variance σ22 = σ21
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...