Use a table of areas for the standard normal curve to find the required z-score.
-Determine the two z-scores that divide the area under the standard normal curve into a middle 0.96 area and two outside 0.02 areas.
A)0 and 2.05
B)-1.75 and 1.75
C)-2.05 and 2.05
D)-2.33 and 2.33

Question

Use a table of areas for the standard normal curve to find the required z-score.
-Determine the two z-scores that divide the area under the standard normal curve into a middle 0.96 area and two outside 0.02 areas. 
A)0 and 2.05
B)-1.75 and 1.75
C)-2.05 and 2.05
D)-2.33 and 2.33

Quizplus · Accepted Answer

The middle 0.96 area under the standard normal curve leaves 0.04 to be split equally between the two tails, with 0.02 in each tail. Looking up 0.02 in the z-table (or using a calculator) for the area in the tail gives a z-score of approximately ±2.05.

Use a Table of Areas for the Standard Normal Curve