In testing a population variance or constructing a confidence interval for the population variance,an essential assumption is that:
A) sample size exceeds 30.
B) expected frequencies equal or exceed 5.
C) the population is uniformly distributed.
D) the population is normally distributed.
E) the population is binomially distributed.

Question

Quizplus · Accepted Answer

The assumption that the population is normally distributed is essential for testing a population variance or constructing a confidence interval for the population variance.

In Testing a Population Variance or Constructing a Confidence Interval