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Chapter 6: Q. 6.76 (page 269)

Obtain the z-score that has an area0.70 to its right.

Short Answer

Expert verified

The z-score under the usual normal curve with the area 0.70to its right is around-0.52.

Step by step solution

01

Given information

The given area is0.70.

02

Explanation 

The given area is 0.70.

The z-score for which the area under the standard normal curve to its right is 0.70will be identical to the z-score for which the area under the standard normal curve to its left is 1-0.70=0.30.

Begin by looking for the 0.30area in the table's body. The item isn't on the table. 0.3015is the nearest area. It will have a z-score of -0.52as a result.

As a result, the z-score under the usual normal curve with the area 0.70to its right is around-0.52, which may be depicted as

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

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