We use the t distribution to perform a hypothesis test about the population mean when:
A)the population from which the sample is drawn is approximately normal and the population standard deviation is known
B)the population from which the sample is drawn is not approximately normal and the population standard deviation is known
C)the population from which the sample is drawn is approximately normal and the population standard deviation is unknown
D)the population from which the sample is drawn is not approximately normal and the population standard deviation is unknown

Question

Quizplus · Accepted Answer

The t distribution is used when the population standard deviation is unknown and the sample is drawn from a population that is approximately normal.

We Use the T Distribution to Perform a Hypothesis Test