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13th Edition

Anderson

Publisher: CENGAGE L

ISBN: 9781305881884

Chapter 6, Problem 46SE

Textbook Problem

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Assume that the test scores from a college admissions test are normally distributed, with a mean of 450 and a standard deviation of 100.

- a. What percentage of the people taking the test score between 400 and 500?
- b. Suppose someone receives a score of 630. What percentage of the people taking the test score better? What percentage score worse?
- c. If a particular university will not admit anyone scoring below 480, what percentage of the persons taking the test would be acceptable to the university?

**a.**

To determine

Find the percentage of the scores that are in between 400 and 500.

**Calculation:**

The college admission scores are distributed normally with mean 450 and standard deviation 100.

**Software Procedure:**

Step-by-step procedure to obtain *probability* by using MINITAB software:

- Choose
**Graph > Probability Distribution Plot**choose**View Probability > OK.** - Enter the
**Mean**as**450**and**Standard deviation**as**100**. - From
**Distribution**, choose ‘**Normal**’ distribution. - Click the
**Shaded Area**tab...

**b.**

To determine

Find the percentage of the scores that are better at the score of 630 and the percentage of the scores that are worse at the score of 630.

**c.**

To determine

Find the percentage of the persons that are acceptable to the university.

STATISTICS F/BUSINESS+ECONOMICS-TEXT

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