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

Question

How much do too 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 26 and standard deviation 4. Use the TI-84 calculator to answer the following. Round the answer to two decimal places Find the 96th percentile of the number of hours studying the 96th percentile of the number of boon studying is 33.00 hours Find the 34th percentile of the number of hours studying. the 34th percentile of the number of hours studying is hours.

Explanation / Answer

96th percentile:

z score from table

z = 1.75

x = z*sd + mean

   = 1.75*4 + 26

   = 33

Part 2

for 34th percentile

z = -0.41

x = -0.41*4 + 26

   = 24.36

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