On the midnight shift, the number of patients with head trauma in an emergency room has the probability distribution shown below.

TABLE:

X 0 1 2 3 4 5 TOTAL

P(X) .10 .33 .25 .20 .10 .02 1.00

(a)Calculate the mean and standard deviation.(Round your mean value to 2 decimal places and standard deviation to 3 decimal places.)

Mean =

Standard Deviation =