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A certain office building infrequently experiences power

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A certain office building infrequently experiences power outages. It is known that the probability of a power outage on any given day is 0.005, and power outages are independent of each other.

a) What is the probability that during any given 400 day period there will be one day with a power outage?

b) What is the probability that power outages will occur on more than three days during the 400 day period?

Reference no: EM13612469

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