A firm has three telephone numbers. They all receive numbers of calls that follow a Poisson distribution, the first havi

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A firm has three telephone numbers. They all receive numbers of calls that follow a Poisson distribution, the first havi

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A Firm Has Three Telephone Numbers They All Receive Numbers Of Calls That Follow A Poisson Distribution The First Havi 1
A Firm Has Three Telephone Numbers They All Receive Numbers Of Calls That Follow A Poisson Distribution The First Havi 1 (19.78 KiB) Viewed 34 times
A firm has three telephone numbers. They all receive numbers of calls that follow a Poisson distribution, the first having a mean of 8, the second 4 and the third in a period of half an hour. Find the probability that (a) The second and third lines will receive a total of exactly six calls in half an hour. (4 marks) (b) Line two will receive at most six calls in one hour. (4 marks) (c) Line one will receive no calls in 15 minutes. (4 marks)
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