SOLUTION: 44 students take an exam. The mean in 57 with a standard deviation of 20 what is the probability of getting a 50 or worse?

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Question 773712: 44 students take an exam. The mean in 57 with a standard deviation of 20 what is the probability of getting a 50 or worse?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
44 students take an exam. The mean in 57 with a standard deviation of 20 what is the probability of getting a 50 or worse?
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z(50) = (50-57)/20 = -7/20
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P(x <= 50) = P(z <= -7/20) = normalcdf(-100,-7/20) = 0.3632
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Cheers,
Stan H.
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