Is there a difference in the yearly cost to service an automobile based on whether it is a luxury car, economy car, sports utility vehicle, or truck? The data given in Table 11.17 represents a random sample of the yearly price for service based on the type of vehicle.

a. Is there a difference in the price paid for yearly service by type of vehicle? Run both a Kruskal-Wallis test and a one-way ANOVA and check any relevant model assumptions.

b. On the basis of results from part a., which method do you think best represents the underlying data?

Table 11.17

Transcribed Image Text:

Economy Cars Yearly Service Cost for Luxury Cars, Economy Cars, Sport Utility Vehicles, or Trucks Luxury Cars Sport Utility Vehicles Trucks 852 630 744 794 874 693 692 801 846 577 625 758 844 639 639 764 725 566 605 958 845 562 825 961 745 641 808 803 937 493 807 826 981 677 612 985 924 479 885 752 978 465 856 923