Which of the following best describes the p value.
A) It is the same as an alpha level.
B) It is a conditional probability.
C) Its value must be greater than .05 to reject the null hypothesis.
D) All of these.

Question

Quizplus · Accepted Answer

The p value is the probability of observing the obtained result or more extreme results, assuming that the null hypothesis is true. It is a conditional probability because it is calculated assuming that the null hypothesis is true. Option A is incorrect because the alpha level is a predetermined criterion for rejecting or retaining the null hypothesis, whereas the p value is calculated based on the obtained data. Option C is incorrect because the significance level (alpha) is used to determine whether the p value is small enough to reject the null hypothesis, but there is not a fixed cutoff for the p value itself.

Which of the Following Best Describes the P Value