I 1 75 Multiple Choice 3 points each The expected number of 1 s or...
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I 1 75 Multiple Choice 3 points each The expected number of 1 s or 2 s in 240 rolls of a six sided die is a 60 a 50 15 b 40 2 The standard deviation of a binomial distribution for which n 50 and p 0 15 is a 0 599 b 7 082 a 2 5 c 80 b 0 914 3 If the random variable x is binomially distributed with n 10 and p 0 05 then P x 2 is c 6 375 b 0 0821 d 120 c 0 074 d 2 525 4 Given a Poisson random variable x where the average number of times an event occured in a certain period of time is 2 5 then P x 0 is c 1 5811 d 0 55 d 0 40 Which of the following experiments can be modeled by the Poisson distribution a The number of calls received by a switchboard in 1 hour b The number of bacteria per 22 ml of fluid c The number of customer arrivals at a checkout counter in 1 day d All of the above
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