When we fail to reject null hypothesis, then we know for certain that
A) the mean of the sample equals the mean of the population
B) the mean of the sample differs from the mean of the population
C) the mean of the sample is a biased estimator
D) none of these, since the statistical decision is a probability statement and not a

Question

Quizplus · Accepted Answer

Failing to reject the null hypothesis does not mean that we know for certain that the mean of the sample equals the mean of the population or that it differs from the mean of the population. It also does not mean that the mean of the sample is a biased estimator. The statistical decision is a probability statement and does not provide a certain answer.

When We Fail to Reject Null Hypothesis, Then We Know