Three Major Automobile Manufacturers Have Entered Their Cars in the Indianapolis

Essay

Three major automobile manufacturers have entered their cars in the Indianapolis 500 race. The speeds of the tested cars are given below. $$\begin{array} { c c c } \text { Manufacturer A } & \text { Manufacturer B } & \text { Manufacturer C } \\180 & 177 & 175 \\175 & 180 & 176 \\179 & 167 & 177 \\176 & 172 & \\190 & &\end{array}$$ At α = .05, test to see if there is a significant difference in the average speeds of the cars of the auto manufacturers.