The probability of the average wait time (in hours) of a person seeking treatment during any given hour at an emergency room is shown in the distribution.

X	1	2	3	4	5
P(x)	0.13	0.24	0.32	0.25	0.06

Mrs. Price brings her 3 children (Lucy, Andy, and Maura) to the emergency room for treatment for the flu. Let Y = the sum of the wait times for the treatment. (Only one pediatrician is in the emergency room.)

Find the mean waiting time for the 3 children (Y) and the standard deviation(Y) given that the wait times of each are independent.

Mean = 9 and SD = 2.74

Mean = 8.61 and SD = 2.136

Mean = 9 and SD = 4.74

Mean = 8.61 and SD = 1.923

Mean = 8.61 and SD = 3.33