Question

Assume a standard Normal distribution. Draw a​ well-labeled Normal curve for each part.

a. Find the​ z-score that gives a left area of 0.7303

b. Find the z-score that gives a left area of 0.1647

Answer 1

a.

We need to find z such that:

Using standard normal tables/ excel we get:

The following is obtained graphically:

b)

We need to find z such that:

Using standard normal tables/ excel we get:

The following is obtained graphically:

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