When testing a null hypothesis about a single population mean and the population standard deviation is unknown, if the sample size is less than 30, one compares the computed test statistic for significance with a value from the ________ distribution.
A) t
B) z
C) binomial
D) hypergeometric

Question

Quizplus · Accepted Answer

Since the standard deviation is not known, we have to use the t distribution.

When Testing a Null Hypothesis About a Single Population Mean