Answer
Accurate probabilities in a hypothesis test or confidence interval about undefended samples are obtained if 2 basic assumptions about the underlying data are correct:
1. The measurements of the underlying distribution of the 2 population from which the samples are draw are normally distributed.
2. The variance of the 2 distributions are approximately equal.
Work Step by Step
Accurate probabilities in a hypothesis test or confidence interval about undefended samples are obtained if 2 basic assumptions about the underlying data are correct:
1. The measurements of the underlying distribution of the 2 population from which the samples are draw are normally distributed.
2. The variance of the 2 distributions are approximately equal.
