Which is not a likely reason to choose the z distribution for a hypothesis test of a mean?
A)The value of σ is known.
B)The sample size n is very large.
C)The population is normal.
D)The value of σ is unknown.

Question

Quizplus · Accepted Answer

The z distribution is typically used when the population standard deviation (σ) is known. If σ is unknown, the t distribution is more appropriate.

Which Is Not a Likely Reason to Choose the Z