7. Auto Pollution The accompanying table lists the amounts of greenhouse gases emitted by different cars in one year.

a. Assuming that there is no interaction effect, is there sufficient evidence to support the claim that amounts of emitted greenhouse gases are affected by the type of transmission (automatic manual)?

b. Assuming that there is no interaction effect, is there sufficient evidence to support the claim that amounts of emitted greenhouse gases are affected by the number of cylinders?

c. Based on the results from parts

(a) and (b), can we conclude that greenhouse gas emissions are not affected by the type of transmission or the number of cylinders?

Why or why not?