Suppose a Package Delivery Company Purchased 14 Trucks at the Same

Multiple Choice

Suppose a package delivery company purchased 14 trucks at the same time. Five trucks were
Purchased from manufacturer A, four from B and five from manufacturer C The cost of maintaining each truck was recorded. The company used ANOVA to test if the mean maintenance cost for
Trucks from each manufacturer were equal. To apply the F test, how many degrees of freedom are
In the denominator?

A) 2
B) 3
C) 11
D) 14