The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males can be approximated by a normal​ distribution, with a mean of 5.4 million cells per microliter and a standard deviation of 0.3 million cells per microliter.   ​(a) What is the minimum red blood cell count that can be in the top 20​% of​ counts? ​(b) What is the maximum red blood cell count that can be in the bottom 11​% of​ counts?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males can be approximated by a normal​ distribution, with a mean of
5.4
million cells per microliter and a standard deviation of
0.3
million cells per microliter.
 
​(a) What is the minimum red blood cell count that can be in the top
20​%
of​ counts?
​(b) What is the maximum red blood cell count that can be in the bottom
11​%
of​ counts?
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