An appliance dealer sells three different models of freezers having 13.5, 15.9, and 19.1 cubic feet of storage space respectively. Suppose the probabilities of a customer purchase for the models are as follows:

x 13.5 15.9 19.1
p(x) 0.2 0.5 0.3

What is the mean size of the freezers purchased by all customers?
A. 1
B. 16.17
C. 16.38
D. 40.5

Question

An appliance dealer sells three different models of freezers having 13.5, 15.9, and 19.1 cubic feet of storage space respectively. Suppose the probabilities of a customer purchase for the models are as follows:

x        13.5   15.9   19.1
p(x)     0.2     0.5     0.3


What is the mean size of the freezers purchased by all customers?
	A.	1
	B.	16.17
	C.	16.38
	D.	40.5

anonymous · Answer

I got C for my answer, is that correct?

anonymous · Answer

@agent0smith

agent0smith · Answer

Use it like expected value... multiply the probability of each, by the size 

x        13.5   15.9   19.1
p(x)     0.2     0.5     0.3

13.5*0.2 + 15.9*0.5 + 19.1*0.3

anonymous · Answer

=16.38