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 200minutes, with the results shown in the table below. Complete(a) through(c) to the right.

Arrivals	Frequency
0	13
1	29
2	48
3	42
4	31
5	21
6	10
7	4
8	2

(If decimal round to three decimal places as needed.)

a. Compute the expected number of arrivals per minute.

b. Compute the standard deviation

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