In a two-tailed test, if the p-value is less than the probability of committing a Type I error, then:
A) a one-tailed test should be used
B) the null hypothesis should be rejected
C) the null hypothesis should not be rejected
D) another sample should be selected at random from the population
E) the probability of a Type II error must be calculated

Question

Quizplus · Accepted Answer

If the p-value is less than the significance level (probability of committing a Type I error), then we reject the null hypothesis. This is because it means the probability of getting the observed results, assuming the null hypothesis is true, is very low, and therefore, we have evidence to suggest that the null hypothesis is not true.

In a Two-Tailed Test, If the P-Value Is Less Than