Compute the expected number of arrivals per minute

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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 results shown in the table below. Complete? (a) through? (c) to the right.

Arrivals Frequency

1 24
2 45
3 43
4 23
5 16
6 9
7 3
8 1

a. Compute the expected number of arrivals per minute.

b. Compute the standard deviation

c. c. What is the probability that there will be fewer than 2 arrivals in a given? minute?

P(x<2)=

Reference no: EM132891546

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