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Answer: Constructing Frequency Distributions. In Exercise,

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

Solution for problem 26BSC 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 26BSC

 

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

Female Red Blood Cell Counts Refer to Data Set 1 in Appendix B and use the red blood cell counts (million cells/μL) for females. Begin with a lower class limit of 3.60 and use a class width of 0.40. Using a very loose interpretation of the requirements for a normal distribution, do the red blood cell counts appear to be normally distributed?

Step-by-Step Solution:
Step 1 of 3

Problem 26BSC

Answer:

Step1 of 3:

We have Refer to Data Set 1 in Appendix B and use the red blood cell counts (million cells/μL) for females. Begin with a lower class limit of 3.60 and use a class width of 0.40.

Step2 of 3:

We need to check whether the red blood cell counts appear to be normally distributed by using a very loose interpretation of the requirements for a normal distribution,

Step3 of 3:

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

 

CI

frequency

3.6-4

2

4-4.4

13

4.4-4.8

15

4.8-5.2

7

5.2-5.6

2

5.6-6

1

A frequency histogram is obtained by using Excel and steps are as follows

Enter the given data in Excel sheet

select data(frequency column) go to insert

choose histogram  then press ok

 The red blood cell counts appear to be normally distributed, because the histogram has a rough bell shape.hence,The red blood cell counts appear to be normally distributed.

Step 2 of 3

Chapter 2.2, Problem 26BSC is Solved
Step 3 of 3

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

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Answer: Constructing Frequency Distributions. In Exercise,