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May 24, 2015

Homework Help: Algebra

Posted by Tracy on Wednesday, April 30, 2008 at 1:22pm.

The time a group of high school students arrive home from school each day was found to be normally distributed. The mean time was 3:15pm and the times had a standard deviation of 15 minutes. What is the probability that a student chosen at random arrives home from school before 2:30pm?

what formula would i use to solve for this?

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