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Solution: In Exercises, find the coefficient of variation

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola ISBN: 9780321836960 18

Solution for problem 24BSC Chapter 3.3

Elementary Statistics | 12th Edition

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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola

Elementary Statistics | 12th Edition

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1
Problem 24BSC

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.)

Customer Waiting Times Waiting times (in minutes) of customers at the Jefferson Valley Bank (where all customers enter a single waiting line) and the Bank of Providence (where customers wait in individual lines at three different teller windows) are listed below.

Jefferson Valley (single line):    6.5    6.6    6.7    6.8    7.1   7.3   7.4    7.7    7.7         7.7

Providence (individual lines):    4.2    5.4    5.8    6.2    6.7    7. 7  7.7    8.5    9.3    10.0

Step-by-Step Solution:

Answer:

Step 1 of 3</p>

SL No.

Jefferson Valley(single line)

      x

Providence(individual lines)

   y

(x -

(y -

1

6.5

4.2

0.4225

8.7025

2

6.6

5.4

0.3025

3.0625

3

6.7

5.8

0.2025

1.8225

4

6.8

6.2

0.1225

0.9025

5

7.1

6.7

0.0025

0.2025

6

7.3

7.7

0.0225

0.3025

7

7.4

7.7

0.0625

0.3025

8

7.7

8.5

0.3025

1.8225

9

7.7

9.3

0.3025

4.6225

10

7.7

10

0.3025

8.1225

Sum

71.5

71.5

2.045

29.865

Average

7.15

7.15

Mean of  Jefferson Valley (single line)

         

              =

              =  7.15

Standard deviation

                                   =

                                   = 0.4766

Step 2 of 3</p>

Mean of Providence (individual lines)

       

           

              =

              =  7.15

Standard deviation

                                   =

                                   =  1.8216

Step 3 of 3

Chapter 3.3, Problem 24BSC is Solved
Textbook: Elementary Statistics
Edition: 12
Author: Mario F. Triola
ISBN: 9780321836960

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.)Customer Waiting Times Waiting times (in minutes) of customers at the Jefferson Valley Bank (where all customers enter a single waiting line) and the Bank of Providence (where customers wait in individual lines at three different teller windows) are listed below.Jefferson Valley (single line): 6.5 6.6 6.7 6.8 7.1 7.3 7.4 7.7 7.7 7.7Providence (individual lines): 4.2 5.4 5.8 6.2 6.7 7. 7 7.7 8.5 9.3 10.0” is broken down into a number of easy to follow steps, and 91 words. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12. The full step-by-step solution to problem: 24BSC from chapter: 3.3 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM. This full solution covers the following key subjects: customers, Waiting, bank, individual, jefferson. This expansive textbook survival guide covers 121 chapters, and 3629 solutions. Since the solution to 24BSC from 3.3 chapter was answered, more than 351 students have viewed the full step-by-step answer. Elementary Statistics was written by and is associated to the ISBN: 9780321836960.

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Solution: In Exercises, find the coefficient of variation

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