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Chapter 6: Q. 6.73 (page 269)

Find the z-score that has an area of 0.75 to its left under the standard normal curve.

Short Answer

Expert verified

The z-score under the usual normal curve with the area 0.75 to its left is around 0.67.

Step by step solution

01

Given information

The given area is0.75.

02

Explanation

The given area is 0.75.

Begin by looking for the 0.75area in the table's body. The item isn't on the table. 0.7486is the closest area. The matching -score for the area is 0.67.

As a result, the z-score under the usual normal curve with the area 0.75to its left is around 0.67, which can be depicted as

Below is a section of the standard normal table that is relevant:

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