Statistics Through Applications
Statistics Through Applications
2nd Edition
ISBN: 9781429219747
Author: Daren S. Starnes, David Moore, Dan Yates
Publisher: Macmillan Higher Education
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Chapter 3, Problem 3.52RE

(a)

To determine

To construct: the histogram and the distribution of coli form appear to be approximately normal.

(a)

Expert Solution
Check Mark

Explanation of Solution

Given:

Statistics Through Applications, Chapter 3, Problem 3.52RE , additional homework tip  1

Graph:

Statistics Through Applications, Chapter 3, Problem 3.52RE , additional homework tip  2

The distribution is looking to be a normal because the histogram has a clock shape. First quartile and third quartile is 4 and 7 respectively.

(b)

To determine

To Calculate: the mean and standard deviation for the distribution.

(b)

Expert Solution
Check Mark

Answer to Problem 3.52RE

Mean = 5.88 and

Standard deviation = 4.11

Explanation of Solution

Given:

Statistics Through Applications, Chapter 3, Problem 3.52RE , additional homework tip  3

Calculation:

Statistics Through Applications, Chapter 3, Problem 3.52RE , additional homework tip  4

Mean is 5.88 and standard deviation is 4.11 which is looking forth. The first quartile and third quartile are 4 and 7 respectively.

(c)

To determine

To Calculate: the percent of the distribution fall within one, two and three standard deviation of the mean.

(c)

Expert Solution
Check Mark

Explanation of Solution

Graph:

Statistics Through Applications, Chapter 3, Problem 3.52RE , additional homework tip  5

68% of the data lies within one standard deviations of the mean, 95% of the data lies within two standard deviation of the mean and 99.7% of the data lies within three standard deviation of the mean which into the diagram

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