Consider the Following to Answer the Question(s) Below

Multiple Choice

Consider the following to answer the question(s) below:
A national car rental company recently conducted a study in which cars with automatic and standard transmissions were rented to male and female customers. Three customers in each category were randomly selected and the number of miles driven per day was recorded as follows:

-Based on the design of this study, how many degrees of freedom will be associated with the mean squares for the type of transmission?

A) 1
B) 2
C) 3
D) 6
E) 8