SOLUTION: Suppose that the distribution of test scores on a statistics exam are normally distributed with a mean of 70 and a standard deviation of 11. What proportion of the class scored m

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Question 928926: Suppose that the distribution of test scores on a statistics exam are
normally distributed with a mean of 70 and a standard deviation of 11.
What proportion of the class scored more than 79 on the test? Round
your answer to the nearest ten-thousandth (4 decimal places).
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
mean of 70 and a standard deviation of 11. z+=+blue%28x+-+70%29%2Fblue%2811%29
p(x > 79) = P(z > 9/11) = normalcdf(.8182, 100) = .2066 0r 20.66%