One of the t-procedures for making inferences about two independent populations requires that the samples are independent.Of the following, which would guarantee this independence?
A)The samples are simple random samples from each of the populations.
B)The sample sizes are at least 30 for each of the populations.
C)The populations are normally distributed.
D)The population variances are equal.
E)The sample sizes are equal.

Question

Quizplus · Accepted Answer

A simple random sample from each of the populations ensures independence between the two samples. The other options may or may not be present, but they do not guarantee independence between the two samples.

One of the T-Procedures for Making Inferences About Two Independent