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Unformatted text preview: (6) Suppose X takes the values 0 , 1 , 2 with equal values and U U (0 , 1) and X U . What is the distribution function of X + U ? Does X + U have a density? (7) A post oce has two clerks. Service at clerk i is exp( i ) distributed. You arrive and require service but both clerks are busy with one customer each, but apart from these customers there is nobody else in front of you waiting for service. Let T be the amount of time you spend in the post oce until your service is completed. Find E ( T ). 1...
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This note was uploaded on 10/31/2011 for the course OR&IE 3500 at Cornell University (Engineering School).