In а 2018 fuelecоnоmy.gоv collected dаtа on all 2018 vehicles below is small snapshot of some of that data, it shows summary statistics for the average city MPG’s. Test the claim that General Motors vehicles have a higher average city MPG’s than Ford Motor Company at the 5% significance level using PHANTOMS. Mfr Name n Mean Std. dev. Ford Motor Company 132 19.075758 4.6783915 General Motors 171 19.859649 5.2168458