Statistics Probability - Probability of average sleep

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Statistics Probability  - Probability of average sleep Powered By Docstoc
					              Sub: Statistics                                                                            Topic: Probability



              Question:
              Find the required probability for normal distribution.

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              1. The scores on the verbal portion of the SAT have a normal distribution with a mean of 500
              and standard deviation of 100.

                 -What is the proportion of people that score at least 700?

                -If a student who took the SAT is randomly chosen what is the probability that the student
              scores at most 350 on the verbal portion?

                 -George scored higher than about 62% of the people on the verbal portion of the SAT. What
                 is George’s score?

              2. The average number of hours of sleep per night that a college freshman gets is 6.5 with a
              standard deviation of 1.8 hours. If 35 college freshmen are randomly chosen find the
              probability 
				
DOCUMENT INFO
Description: Find the required probability for normal distribution. - 1. The scores on the verbal portion of the SAT have a normal distribution with a mean of 500 and standard deviation of 100.
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