Mathematics, 18.05.2021 18:40 tommyewall34

A survey among freshman at a certain university revealed that the time spent studying the week before final exams was normally distributed with a mean of 25 hours and a standard deviation of 7 hours. What proportion of freshman students study less than 30 hours the week before final exams?

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A survey among freshman at a certain university revealed that the time spent studying the week befor...