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# In Exercises, find the coefficient of variation for each ISBN: 9780321836960 18

## Solution for problem 21BSC Chapter 3.3

Elementary Statistics | 12th Edition

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Problem 21BSC

In Exercises, find the coefficient of variation for each of the two samples; then compare the variation. (The same data were used in Section 3-2.)

Speeding and Race Listed below are speeds (in mi/h) of cars on the New Jersey Turnpike by race of the driver. All cars are going in the same direction, and all of the cars are from New Jersey. The data are from Statlib and the authors are Joseph Kadane and John Lamberth. Step-by-Step Solution:
Step 3 of 6

Solution 21BSC

For White drivers:

We know that the mean of a given set of observations obtained by adding those observations and divide that result with number of given observations. The mean speed (in mi/h) of cars on the New Jersey Turnpike is Therefore, the mean speed of cars on the New Jersey Turnpike for white drivers is

73 mi/h.

Step 2 of 6</p>

From the given information, We know that variance of given set of sample value found as follows:  Therefore, the standard deviation of the given sample is .

Step 3 of 6</p>

We know that coefficient of variation for a sample found by Therefore, the coefficient of variation for White drivers is 3.9%.

Step 4 of 6

Step 5 of 6

##### ISBN: 9780321836960

This full solution covers the following key subjects: cars, data, jersey, new, race. This expansive textbook survival guide covers 121 chapters, and 3629 solutions. The full step-by-step solution to problem: 21BSC from chapter: 3.3 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM. The answer to “In Exercises, find the coefficient of variation for each of the two samples; then compare the variation. (The same data were used in Section 3-2.)Speeding and Race Listed below are speeds (in mi/h) of cars on the New Jersey Turnpike by race of the driver. All cars are going in the same direction, and all of the cars are from New Jersey. The data are from Statlib and the authors are Joseph Kadane and John Lamberth.” is broken down into a number of easy to follow steps, and 76 words. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12. Elementary Statistics was written by and is associated to the ISBN: 9780321836960. Since the solution to 21BSC from 3.3 chapter was answered, more than 638 students have viewed the full step-by-step answer.

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