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

 

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Expert Answer

Step 1

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

Statistics homework question answer, step 1, image 1

 

Step 2

The positive z value is obtained below:

Procedure for finding the z-value is listed below:

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

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