SOLUTION: Let the random variable X follow a normal probability distribution with a mean 10 and a standard deviation of 2. Find P(X<15).
What I do know is it will not be 1 - # because of
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What I do know is it will not be 1 - # because of
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Question 581251: Let the random variable X follow a normal probability distribution with a mean 10 and a standard deviation of 2. Find P(X<15).
What I do know is it will not be 1 - # because of the sign, but I am not exactly sure where to start. Help!
Thank You Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Let the random variable X follow a normal probability distribution with a mean 10 and a standard deviation of 2. Find P(X<15).
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Find the z-value of x = 15.
z(15)= (15-10)/2 = 5/2
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P(x < 15) = P(z < 5/2) = normalcdf(-100,5/2) = 0.9938
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Cheers,
Stan H.
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