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In Exercises, assume that red blood cell counts of women

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

Solution for problem 9CQQ Chapter 6.7

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 9CQQ Problem 9CQQ

In Exercises, assume that red blood cell counts of women are normally distributed with a mean of 4.577 and a standard deviation of 0.382.

If 25 women are randomly selected, find the probability that the mean of their red blood cell counts is less than 4.444.

Step-by-Step Solution:
Step 1 of 3

Problem 9CQQ

Answer:

Step1 of 3:

We have red blood cell counts of women are normally distributed with a mean of 4.577 and a standard deviation of 0.382.

Step2 of 3:

We need to find the probability that the mean of their red blood cell counts is less than 4.444.

If 25 women are randomly selected.

Step3 of 3:

We have

Consider the z statistics with x = 4.444

P()

                   =

                   =

                   = P(-1.740)

                       = 0.0409.

Probability that -1.740 is calculated by using standard normal table(area under normal curve).in statistical table we have to see row -1.7 under column 0.04

Hence, P(z < -1.740) = 0.0409

Conclusion:

Therefore,If 25 women are randomly selected, the probability that the mean of their red blood cell counts is less than 4.444 is 0.0409.

               

Step 2 of 3

Chapter 6.7, Problem 9CQQ is Solved
Step 3 of 3

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

The answer to “In Exercises, assume that red blood cell counts of women are normally distributed with a mean of 4.577 and a standard deviation of 0.382.If 25 women are randomly selected, find the probability that the mean of their red blood cell counts is less than 4.444.” is broken down into a number of easy to follow steps, and 45 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. This full solution covers the following key subjects: Women, Blood, Cell, counts, red. This expansive textbook survival guide covers 121 chapters, and 3629 solutions. The full step-by-step solution to problem: 9CQQ from chapter: 6.7 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM. Since the solution to 9CQQ from 6.7 chapter was answered, more than 599 students have viewed the full step-by-step answer.

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In Exercises, assume that red blood cell counts of women