SOLUTION: Assume the random variable x is normally distributed with mean 81 and standard deviation 5. Find the indicated probablilty. P(68<x<76)

Question 619395: Assume the random variable x is normally distributed with mean 81 and standard deviation 5. Find the indicated probablilty. P(68
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Assume the random variable x is normally distributed with mean 81 and standard deviation 5. Find the indicated probablilty.
P(68 < x <76)
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z(68) = (68-81)/5 = -13/5
z(76) = (76-81)/5 = -1
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P(68 < x < 76)
= P(-13/5 < z < -1)
= normalcdf(-13/5,-1)
= 0.1540
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Cheers,
Stan H.
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