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)Chi-square

Question

Quizplus · Accepted Answer

When the population standard deviation is unknown and the sample size is less than 30, one uses t-distribution to compare the computed test statistic for significance with a value from the distribution. Therefore, the best choice is A, t-distribution.

When Testing a Null Hypothesis About a Single Population Mean