A firm has on average seven people absent due to illness per day. Calculate the probability that on a particular day there are (a) five people absent (b) eight people absent (c) more than three people absent.
An engineer receives, on average, five emergency calls in an 8-hour period. Calculate the probability that in an 8-hour period the engineer receives (a) exactly five calls (b) fewer than three calls (c) more than four calls.
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