Question

A highway safety institution conducts experiments in which cars are crashed into a fixed barrier at 40 mph. In the​ institute's 40-mph offset​ test, 40% of the total width of each vehicle strikes a barrier on the​ driver's side. The​ barrier's deformable face is made of aluminum​ honeycomb, which makes the forces in the test similar to those involved in a frontal offset crash between two vehicles of the same​ weight, each going just less than 40 mph. You are in the market to buy a family car and you want to know if the mean head injury resulting from this offset crash is the same for large family​ cars, passenger​ vans, and midsize utility vehicles​ (SUVs). The data in the accompanying table were collected from the​ institute's study.

Using the data below, find the P-value. (round to three decimal places as needed)

Large_Family_Cars	Passenger_Vans	Midsize_Utility_Vehicles
263	148	223
135	238	216
410	339	187
533	697	305
150	554	357
633	474	552
165	323	393

Answer 1