Which of the following is not a required assumption in the reasoning behind constructing a hypothesis test of a population mean?
A) The population mean is K.
B) The size of the sample is sufficiently large .
C) The population distribution is normal.
D) The data sample is random.

Question

Quizplus · Accepted Answer

While the assumption of normality can be helpful in certain situations, it is not always required in constructing a hypothesis test for a population mean. Other probability distributions can be used, such as t-distributions, when the population standard deviation is unknown and must be estimated from the sample. The other assumptions listed, including a known or hypothesized population mean, a random sample, and a sufficiently large sample size, are typically required for developing a hypothesis test.

Which of the Following Is Not a Required Assumption in the Reasoning