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For a normal distribution Where the mean is 50 and the standard deviation is 10, What percentage of the area is: a. between the scores

For a normal distribution Where the mean is 50 and the standard deviation is 10, What percentage of the area is: a. between the scores of 40 and 47? b. below a score of 5.3_?_ 0. between 80 and 70? d. between 75 and 20

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