In an automatic telephone exchange the probability that any one call is wrongly connected is 0.002. a)
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Question:
In an automatic telephone exchange the probability that any one call is wrongly connected is 0.002.
(a) For a day when 1000 independent calls are connected, determine using the exact distribution the probability that at most 2 wrong connections are made, giving your answer to 7 decimal places.
(b) What is the minimum number of independent calls required before there is a probability of at least 0.9 that at least one of the calls is wrongly connected?
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