When testing , the observed value of the z-score was found to be -2.15. Then, the p-value for this test would be

Question

When testing  , the observed value of the z-score was found to be -2.15. Then, the p-value for this test would be

Quizplus · Accepted Answer

The p-value is equal to the area under the curve to the left of the observed z-score. Looking at a standard normal distribution table or using a calculator, the area to the left of -2.15 is approximately 0.0316. Therefore, the p-value for this test is 0.0316 or 3.16%. The best choice for the answer is B.

When Testing , the Observed Value of the Z-Score