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Constructing Frequency Distributions. In | Ch 2.2 - 28BSC

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

Solution for problem 28BSC Chapter 2.2

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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Problem 28BSC

 

Constructing Frequency Distributions. In Exercise, use the indicated data and construct the frequency distribution.

Flight Taxi-Out Times Refer to Data Set 15 in Appendix B and use the times required to taxi out for takeoff. Begin with a lower class limit of 10 min and use a class width of 5 min. Based on the result, does it appear that the time required to taxi out can be predicted with reasonable accuracy?

Step-by-Step Solution:
Step 1 of 3

Problem 28BSC

Answer:

Step1 of 3:

We have Refer to Data Set 15 in Appendix B and use the times required to taxi out for takeoff. Begin with a lower class limit of 10 min and use a class width of 5 min. Based on the result.

Step2 of 3:

We need check does it appear that the time required to taxi out can be predicted with reasonable accuracy?

Step3 of 3:

The given data can be written in terms of class interval and it is given below

CI

frequency

10-15

10

15-20

20

20-25

9

25-30

1

30-35

2

35-40

2

40-45

2

45-50

2

“No”, because the last 5 classes have a very low (non-zero) frequency and thus the times do not seem to be centered about a certain value, which means that the time can not be predicted with reasonable accuracy.

Step 2 of 3

Chapter 2.2, Problem 28BSC is Solved
Step 3 of 3

Textbook: Elementary Statistics
Edition: 12
Author: Mario F. Triola
ISBN: 9780321836960

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Constructing Frequency Distributions. In | Ch 2.2 - 28BSC