Here is a histogram of the probability distribution along with the mean and standard deviation.
probability
0.00+
-1
0 1 2 3 4 5 6
r = number of refrigerators sold
ur = 1.72
or = 1.36
at this appliance store, the commission earned is $30 for each refrigerator sold. that is, if c = total com
earned for a randomly selected hour, c = 30r.
(a) what shape does the probability distribution of chave?
(b) find the mean of c.