Chapter 6, Problem 12P

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

A normal distribution has a mean of μ = 30 and a standard deviation of σ = 12. For each of the following scores, indicate whether the body is to the right or left of the score and find the proportion of the distribution located in the body.

**a.** *X* = 32

**b.** *X* = 18

**c.** *X* = 24

**d.*** X* = 39

**a.**

To determine

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

Explanation

Score follows normal distribution with mean 30 and standard deviation 12 and X score is 33.

**Calculation:**

Let
*X* respectively. Then,

Let, *p* is the probability that score obtained is greater than 33 Then,

The for

**b.**

To determine

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

**c.**

To determine

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

**d.**

To determine

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

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