The number of cells in a sample of kidney tissue is normally distributed with a mean...
The number of cells in a sample of kidney tissue is normally distributed with a mean of 4200 and a standard deviation of 300 to answer the following questions:
What proportion of samples would have from 3700 to 4400 cells?
Homework Answers
Solution :
Given that ,
mean = 
= 4200
standard deviation = 
= 300
P(3700< x < 4400) = P[(3700-4200) /300 < (x - 
) / < (4400-4200) / 300)]
= P( -1.67< Z <0.67 )
= P(Z < 0.67) - P(Z < -1.67)
Using z table
= 0.7486 - 0.0475
= 0.7011
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