[商管][作業研究]-交大101-工工所
jobs arrive according to a poisson process with rate 入=12 per hour.
suppose that independent of the status of previous jobs and inter-arrival
times, the n-th jobs is a large job with probability 1/4:otherwise, the
jobs is a smaal job.
(a) what is the probability of 5 large jobs in the next hour?
(b) what is the probability of 5 large jobs and 6 small jobs in the
next hour?
(c) what is the probability that the first 2 jobs are small?
(d) what is the probability that the next job arrives more than 40 min from
now?
麻煩版上的高手了
有點不知道他是要用甚麼方法來求機率
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