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Unformatted text preview: Y (Exam 2) follow a bivariate normal distribution with 1 = 70, 1 = 10, 2 = 60, 2 = 15, = 0.6. a) A students is selected at random. What is the probability that his/her score on Exam 2 is over 75? b) Suppose you're told that a student got a 80 on Exam 1. What is the probability that his/her score on Exam 2 is over 75? c) Suppose you're told that a student got a 66 on Exam 1. What is the probability that his/her score on Exam 2 is over 75? d) Suppose you're told that a student got a 70 on Exam 2. What is the probability that his/her score on Exam 1 is over 80? e) A students is selected at random. What is the probability that the sum of his/her Exam 1 and Exam 2 scores is over 150? f) What proportion of students did better on Exam 1 than on Exam 2?...
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This note was uploaded on 10/31/2011 for the course MATH 464 taught by Professor Monrad during the Fall '08 term at University of Illinois, Urbana Champaign.
 Fall '08
 Monrad
 Statistics, Normal Distribution, Probability

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