How much do you study? A survey among freshmen at a certain university revealed

Question

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 28 and standard deviation 6. Round your answers to two decimals. Use Table A.2 to answer the following. Part 1 Find the 91st percentile of the number of hours studying. The 91st percentile of the number of hours studying is hours. Part 2 Find the 36th percentile of the number of hours studying. The 36th percentile of the number of hours studying is hours Part 3 out of 3 Between what two values are the middle 82% of the hours spent studying? (Enter the smaller number in the first box.) The middle 82% of the number of hours studying is between and hours.

Explanation / Answer

Part c)

Crtitical value for middle 82% will be -1.34076 and 1.34076

Lower value = -1.34076*6+28 =19.96

Upper value = 1.34076*6+28 =36.04

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