SOLUTION: The mean value of the scores in a math exam was 71 with a standard deviation of 6. Between 58and 84 there are at least ___% of the scores in that exam.
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Question 797349: The mean value of the scores in a math exam was 71 with a standard deviation of 6. Between 58and 84 there are at least ___% of the scores in that exam.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The mean value of the scores in a math exam was 71 with a standard deviation of 6. Between 58and 84 there are at least ___% of the scores in that exam.
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Sounds like a Chebyshev problem::
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58 is 2 standard deviations below 71
84 is 2 standard deviations above 71
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At least (1-(1/2)^2)) = 0.75 = 75% of the data lies between those values.
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Cheers,
Stan H.
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