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OpenStudy (anonymous):
Scores on an exam are normally distributed with a mean of 76 and a standard deviation of 10. In a group of 230 tests, how many students score below 66? about 115 students about 78 students about 93 students about 37 students
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OpenStudy (krazykricket):
50% - 34% = 16%. So 16% or 0.16 percent of students got a grade lower than 66. Given that you have 230 students: 230 * .16 = 37
OpenStudy (anonymous):
so about 37 percent?
OpenStudy (krazykricket):
D. About 37 Students :)
OpenStudy (anonymous):
alright thanks :)
OpenStudy (krazykricket):
Your Welcome
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