When conducting a hypothesis test for the population mean when sigma is known and the sample size is 30 or more, the test statistic follows the _______.
A)Student's t-distribution
B)normal distribution
C)exponential distribution
D)binomial distribution

Question

Quizplus · Accepted Answer

When the population standard deviation (sigma) is known and the sample size is 30 or more, the Central Limit Theorem applies, and the test statistic follows the normal distribution.

When Conducting a Hypothesis Test for the Population Mean When