A study was done before the recent surge in gasoline prices to compare the cost to drive 25 miles for different types of hybrid vehicles. The cost of a gallon of gas at the time of the study was approximately $2.50. Based on the information given below for different models of hybrid cars, trucks, and SUVs, is there sufficient evidence to conclude a difference in the mean cost to drive 25 miles? Use α = 0.05.

a) Compute degree of freedom treatment (dfT), degree of freedom error (dfE) and degree of total (dfTO).

b) Calculate sum of square treatment (SST), sum of square error (SSE) and sum of square total (SSTO).

c) Calculate the value of mean of square treatment (MST) and mean of square error (MSE)

d) Calculate the F-value.d) Calculate the F-value.d) Calculate the F-value.

Hybrid cars Hybrid SUVS Hybrid trucks 2.10 2.10 3.62 2.42 2.25 2.70 3.43 1.67 1.67 2.10 1.30 2.25