Chapter 6, Problem 13P

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

For a normal distribution with a mean of μ = 60 and a standard deviation of σ = 10, find the proportion of the population corresponding to each of the following.

**a.**Scores greater than 65.**b.**Scores less than 68.**c.**Scores between 50 and 70.

**a.**

To determine

**To find:** The proportion of the distribution located at the body when

Explanation

**Given info:**

The scores follow normal distribution with mean 60 and standard deviation 10 and X score is 65.

**Calculation:**

Let
*X* respectively. Then,

Let, *p* is the probability that score obtained is greater than 89 then,

**b.**

To determine

**To Find:** The proportion of the distribution located at the body when

**c.**

To determine

**To Find:** The proportion of the distribution located in between when

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