The scores on a test given to all juniors in a school district are normally distributed with a mean of 79 and a standard deviation of 7. Fin

Question

The scores on a test given to all juniors in a school district are normally distributed with a mean of 79 and a standard deviation of 7. Find the percent of juniors whose score is no more than 86. The percent of juniors whose score is 86 or below is %.

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Mít Mít 3 years 2021-08-19T03:42:40+00:00 1 Answers 11 views 0

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  1. quangkhai
    0
    2021-08-19T03:44:28+00:00
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    Answer:

    p (x -<-89) = p( _x_-_75_ < _ 89_- __75__) = p (z <_ 2) = 0.9773= 97.73%

    7 7

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