Use the following example to address questions 1-10:

A consumer is interested in comparing gas mileage between three different car manufactures. The researcher finds data at fueleconomy.gov and uses this to compare cars from 3 different manufacturers with the data presented below:

A	B	C
22	23	26
24	26	33
31	30	36
28	29	35
27	25	32

The total degrees of freedom for this case is:

Select one:

a. 2

b. 13

c. 4

d. 14