In a left-tailed test, a statistician got a z test statistic of -1.720. What is the p-value?
A).4292
B).0709
C).0427
D).0301

Question

Quizplus · Accepted Answer

For a left-tailed test, we need to find the area to the left of the test statistic (-1.720) on the standard normal distribution. We can look this up on a standard normal distribution table or use technology to find the p-value. Using a standard normal distribution table, we find that the area to the left of -1.72 is 0.0427. Therefore, the p-value is 0.0427. So, the answer is (C).

In a Left-Tailed Test, a Statistician Got a Z Test