Difficult# Which Is Normal?

APSTAT-VRFTEQ

Which of the following sampling distributions involving sample means will be approximately normal?

I.A sample of size $n = 55$ from a population that is strongly skewed right.

II.A sample of size $n = 20$ from a population that is slightly skewed right with no outliers.

III.A sample of size $n = 5$ from a population that is roughly normal.