The following table contains the probability distribution for the number of traffic accidents daily in a small town. Complete parts (a) through (c) below.

Accidents_Daily_(X) P(X=xi) 0 0.21 1 0.29 2 0.22 3 0.11 4 0.08 5 0.05 6 0.04

a. compute the mean number of accidents per day

b. Compute the standard deviation.

c. What is the probability that there will be at least 2 accidents on a givenday?