SOLUTION: For a maths test, the mean is 65, the standard deviation is 8. What percent of students scored a mark below 49 in Maths?
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Question 1108420: For a maths test, the mean is 65, the standard deviation is 8. What percent of students scored a mark below 49 in Maths? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! For a maths test, the mean is 65, the standard deviation is 8. What percent of students scored a mark below 49 in Maths?
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z(49) = (49-65)/8 = -16/8 = -2
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Percent below 49 = Percent below z= -2 = normalcdf(-100,-2) = 0.0228 = 2.28%
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Cheers,
Stan H.
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