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Mathematics 17 Online
OpenStudy (anonymous):

The time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes. How much time should be given to complete the exam so that 90% of the students complete the exam in the allotted time?

OpenStudy (tkhunny):

Why are you posting this twice?

OpenStudy (anonymous):

I misposted it initially. I threw it up on Mathematics until I realized that there was a Statistics subgroup. Its my mistake.

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