If the probability of an observed difference being a result of sampling error is less than 5%, then:
A) the null hypothesis is usually accepted
B) the null hypothesis is usually rejected
C) the null hypothesis is always rejected
D) the null hypothesis is always accepted

Question

Quizplus · Accepted Answer

If the probability of an observed difference being a result of sampling error is less than 5%, it suggests that the difference is statistically significant and unlikely to happen by chance. Therefore, the null hypothesis (which states that there is no difference between the groups being compared) is usually rejected in favor of the alternative hypothesis.

If the Probability of an Observed Difference Being a Result