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OpenStudy (anonymous):
The grades received by 200 students follow a normal distribution. The mean of the grades is 70%, and the standard deviation is 7%. The number of students who received a grade greater than 70% is about? and the number of students who got a grade higher than 84% is about ?
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OpenStudy (anonymous):
@sammixboo
OpenStudy (anonymous):
@satellite73
OpenStudy (anonymous):
hint, 50% of the data is above the mean
OpenStudy (anonymous):
could you walk me through the steps?
OpenStudy (anonymous):
|dw:1431578849549:dw|
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OpenStudy (anonymous):
|dw:1431578931340:dw|
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