What fraction score lies between 80 and 90, if the normal distribution mean is 70 and the standard deviation is 10? - Quora
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Answer (1 of 3): Convert 80 and 90 to z-scores and look up the z-scores in the Normal Distribution table in the back of your textbook. You want the area between them, so you will need to subtract the area between z=0 and the z score you get from converting 80 to a z-score from the area between z=
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What fraction score lies between 80 and 90, if the normal distribution mean is 70 and the standard deviation is 10? - Quora
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What fraction score lies between 80 and 90, if the normal distribution mean is 70 and the standard deviation is 10? - Quora
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