Suppose that IQs of East State University's students can be described by a Normal model with mean
Question:
a) We select a student at random from East State. Find the probability that this student's IQ is at least 125 points.
b) We select a student at random from each school. Find the probability that the East State student's IQ is at least 5 points higher than the West State student's IQ.
c) We select 3 West State students at random. Find the probability that this group's average IQ is at least 125 points.
d) We also select 3 East State students at random. What's the probability that their average IQ is at least 5 points higher than the average for the 3 West Staters?
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a According to the Normal model the probability that the IQ of a student from East State is at least ...View the full answer
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Related Book For 
Stats Data and Models
ISBN: 978-0321986498
4th edition
Authors: Richard D. De Veaux, Paul D. Velleman, David E. Bock
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