Under a null hypothesis, a sample value yields a p-value of .015. Which of the following statements is true?
A)This finding is statistically significant at the .01 level of significance.
B)This finding is not statistically significant.
C)This finding is statistically significant at the .001 level of significance.
D)This finding is statistically significant at the .05 level of significance.

Question

Quizplus · Accepted Answer

A p-value of .015 indicates that there is a 1.5% chance of observing the sample result (or one more extreme) assuming the null hypothesis is true. This value is less than the commonly used level of significance of .05, which means that we reject the null hypothesis at this level and conclude that the result is statistically significant. However, it is not significant at higher levels of significance (such as .01 or .001) as the p-value is greater than those levels. Therefore, the correct answer is D.

Under a Null Hypothesis, a Sample Value Yields a P-Value