# Statistics Probability - Probability of average sleep

Document Sample

```					              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
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 views: 32 posted: 3/30/2010 language: English pages: 3
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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