6.10 Everyone working in a large open-plan office takes cups of tea or coffee back to their...

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6.10 Everyone working in a large open-plan office takes cups of tea or coffee back to their desk to drink. The mean number of spilled cups of hot drinks in an eight-hour working day is 24. What is the probability that an hour passes in which:

(a) There are no spillages?

(b) There are two spillages?

(c) There are less than four spillages?

(d) There is at least one spillage?

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