SOLUTION: if x follows a normal distribution with a mean of 100 and standard deviation of 10 , what is the probability of having a value of x such that 85 < x

SOLUTION: if x follows a normal distribution with a mean of 100 and standard deviation of 10 , what is the probability of having a value of x such that 85 < x < 110?

Question 672270: if x follows a normal distribution with a mean of 100 and standard deviation of 10 , what is the probability of having a value of x such that 85 < x < 110?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

μ = 100 ,  σ =10  , z = (x-μ)/σ

P(85 < x < 110) = P(z ≤ 1) - P(z ≤ -1.5) = .8413 - .0668   

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