Q. 6.74 - Elementary Statistics

Question

Obtain the z-score that has an area $0.80$ to its left under the standard normal curve.

Step-by-Step Solution

Answer

The z-score under the usual normal curve with the area $0.80$ to its left is around $0.84.$ 

Step 1: Given information

The given area is $0.80.$

Step 2: Explanation

The given area is $0.80$

Begin by looking for the $0.80$ area in the table's body. The item isn't on the table. $0.7995$ is the nearest area. The matching$z$-score for that area is $0.84$.

As a result, the z-score under the usual normal curve with the area $0.80$ to its left is around $0.84$, which may be depicted as

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