SOLUTION: Let X be a normal random variable with mean 20 and standard deviation 4. Find P(X < 19).

SOLUTION: Let X be a normal random variable with mean 20 and standard deviation 4. Find P(X < 19).

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Question 221107: Let X be a normal random variable with mean 20 and standard deviation 4. Find P(X < 19).
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Let X be a normal random variable with mean 20 and standard deviation 4. Find P(X < 19).
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Find the z-score of 19
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z(19) = (19-20)/4 = 0.25
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P(x<19) = P(z<0.25) = 0.5987
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Cheers,
Stan H>
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