Question 202054: A standardized test has a mean score of 64 with a standard deviation of 6
what percentage of students score higher than 70 on the standardized test?
what percentage of students score higher then 76 on the standardized test?
What percentge of students score lower than 58?
Answer by RAY100(1637)   (Show Source):
You can put this solution on YOUR website! Remember the relationships of sigma to %
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sigma,,,,,-3,,,-2,,,-2,,0,,,+1,,,+2,,,+3
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%,,,,,,,,,.3%,,5%,,,32%,,50%,,68%,,95%,,99.7%
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score,,,,,46,,,52,,,58,,,64,,,70,,,76,,,82
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>70,,,,100-68 =32%
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>76,,,,100-95= 5%
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<58,,,32%
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