Question

Asked Mar 19, 2020

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The area under the standard normal curve from zero to z is 0.4505 and z is positive. The value of z is

Step 1

Normal distribution is a symmetrical distribution so the area is equally distributed on both tails of the distribution.

Step 2

**The positive z value is obtained below:**

Procedure for finding the *z*-value is listed below:

- From the table of standard normal distribution, locate the probability value of 0.9505.
- Move left until the first column is reached. Note the value as 1.6
- Move upward until the top row is reached. Note the value as 0.05.
- The intersection of the row and column values gives the area to the two tail of...

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