Read the z statistic from the normal distribution table and choose the correct answer. For a two-tailed test using α = .0150, z =
A) 1.96.
B) 2.17.
C) -2.17.
D) -125.

Question

Quizplus · Accepted Answer

For a two-tailed test with α = .0150, we must look for the area of .0075 in each tail. From the normal distribution table, the closest value for this area is 2.17. However, since it is a two-tailed test, we also need to consider the negative side of the distribution, which gives us a z value of -2.17 (since the table is symmetric). Thus, the z statistic for a two-tailed test using α = .0150 is either 2.17 or -2.17, depending on the direction of the test.

Read the Z Statistic from the Normal Distribution Table and Choose