MATH 431 Final: 2014 Math 431 - Anderson - Spring Final - Section 1
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This may earn you partial credit: no calculators or other electronic devices, please. Turn o your phone: you do not have to carry out complicated numerical computations, but you should simplify your answer if it is possible with reasonable e ort, please present your solutions in a clear manner. A numerical answer without expla- nation cannot get credit. 23 chips numbered 1 through 23 are placed into an urn. The chips are then selected one by one, without replacement, until all 23 have been selected. What is the probability that the 9th, 14th, and. 21st chip so selected had numerical values that were less than or equal to ve: (5 pts. ) Compute the mean of a poisson random variable with a parameter of 13: (5 pts. ) Suppose x has a discrete distribution with pmf given by x px(x) What is p {x 2}? (b) (3 pts. )
