In testing a hypothesis about means,if the sample size was less than 30,then the appropriate statistical test would be?
A)chi-square test
B)t-test
C)z-test
D)one-way ANOVA
E)none of the above

Question

Quizplus · Accepted Answer

If the sample size is less than 30, the appropriate statistical test would be a t-test rather than a z-test. A z-test assumes that the sample size is large enough to approximate a normal distribution, while a t-test accounts for the increased uncertainty introduced by the smaller sample size.

In Testing a Hypothesis About Means,if the Sample Size Was