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How much do you study? A survey among freshmen at a certain university revealed that the number of hours spent studying the week before final

How much do you study? A survey among freshmen at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 25 and standard deviation 9. Use the TI-84 PLUS calculator to answer the following.

Round the answers to at least two decimal places.

(a) Find the 95th percentile of the number of hours studying?

(b) Find the 33rd percentile of the number of hours studying ?

(c) Between what two values are the middle 80% of the hours spent studying?

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