A Consumer Research Organization Is Attempting to Determine Whether There

Essay

A consumer research organization is attempting to determine whether there is any difference in mpg for fully loaded 22-foot trucks leased from three companies,A-Haul,Bertz,and Glyder.Five of these trucks are rented from each company.Each truck is driven with the same weight cargo over the same 200 mile route and the mpg recorded.The results of the test are: $$\begin{array} { | c | c | c | } \hline \text { A-Haul } & \text { Bertz } & \text { Glyder } \\\hline 3.4 & 5.1 & 7.9 \\4.2 & 2.0 & 8.5 \\5.1 & 8.7 & 5.2 \\4.9 & 6.7 & 8.0 \\3.1 & 6.1 & 8.1 \\\hline\end{array}$$ Perform the hypothesis test: H₀: $\mu _ { 1 } = \mu _ { 2 } = \mu _ { 3 }$ (Average mpg is the same for all three rental companies)
H₁: Not all of the mean mpg is the same for the three companies An $\alpha$ = 0.05 is used by the consumer research organization.Is there any difference in mean mpg?
Test statistic = ____________________ = ____________________
Conclusion: ____________________
Interpretation:________________________________________________________