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OpenStudy (anonymous):
Help please?? If 1,000 students take a test that has a mean of 40 minutes, a standard deviation of 8 minutes, and is normally distributed, how many would you expect would finish in less than 40 minutes? 250 500 750 1000
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OpenStudy (nincompoop):
Look at the definition of normal distribution :)
OpenStudy (anonymous):
I have but I don't understand how to do it
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