The number of arrivals per minute at a bank located in the central business district of a large city was recorded over a period of 200 minutes, with the following results:   Arrivals            Frequency      0 14 1 31 2 47 3 41 4 29 5 21 6 10 7 5 8 2   Calculate the expected number of arrivals per Calculate the standard deviation. What is the probability that there will be fewer than two arrivals in a given minute

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