4. According to a survey of advanced curriculum high school students, the average time spent studying each day is 6.8 hours. Assume the standard deviation is 0.60 hours and that the probability distribution is normal. (a) What is the probability that a randomly selected student studies more than 8 hours per day? (b) What is the probability that a randomly selected student studies 6 hours per day or less? (c) Teachers in these programs suggest studying between 7 and 9 hours every day. What percentage of students study this much? (d) What is the 90th percentile for number of hours spent studying each day? The 25th percentile?
4. According to a survey of advanced curriculum high school students, the average time spent studying each day is 6.8 hours. Assume the standard deviation is 0.60 hours and that the probability distribution is normal. (a) What is the probability that a randomly selected student studies more than 8 hours per day? (b) What is the probability that a randomly selected student studies 6 hours per day or less? (c) Teachers in these programs suggest studying between 7 and 9 hours every day. What percentage of students study this much? (d) What is the 90th percentile for number of hours spent studying each day? The 25th percentile?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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