Question

Find the critical value Zα/2 that corresponds to the given confidence level. 88% Zal2 = (Round to two decimal places as needed.)

Answer 1

1.44

Explanation:

To find the critical value Zα/2 for a 88% confidence level, we need to first find α/2.

α/2 = (1-0.88)/2 = 0.06/2 = 0.03

Using a Z-table or calculator, we can find the Z-score that corresponds to a cumulative probability of 0.03 from the left tail, which is -1.44.

Therefore, the critical value Zα/2 for a 88% confidence level is 1.44 (positive or negative depending on the direction of the test).