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Unformatted text preview: c) No, the cities do not represent trials, and the probability of success varies between cities. d) No, because the probability of success varies from student to student. 8.38) a) It is not met because the probability of success varies from game to game. b) It is not met because the number of trials is not set in advance, as the woman could buy a varied number of tickets until she is able to win 3 times. c) Not met because the outcomes are not independent from one trial to the next. If you draw an ace, it decreases the probability that the next card drawn will be an ace. 8.43) a) expected value = 5 standard deviation = .158 It is not a normal binomial as both (n*p) and n(1-p) are less than 10. c) expected value = 500 standard deviation = 20 It is a normal binomial as both (n*p) and n(1-p) greatly exceed 10. 8.84) a) k 3 4 5 6 7 P(X=K) .07 .21 .73 .98 1 b) (.07 + .14 + .52) = .73 c) (.25 + .02) = .27...
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This note was uploaded on 10/29/2008 for the course STAT 200 taught by Professor Barroso,joaor during the Spring '08 term at Penn State.
- Spring '08