Listed below are head injury data from crash test dummies used in cars of various sizes. These measurements are in hic, which denotes a standard head injury criterion.

Small Cars	290	406	371	544	374	501	376	499	479	475
Medium Cars	245	502	474	505	393	264	368	510	296	349
Large Cars	342	216	335	698	216	169	608	432	510	332

Use a 0.05 significance level to test the null hypothesis that the different car categories have the same mean.

What is the SS (treatment)?

Round your answer to the nearest whole number.

What is the SS (error)?

What is the SS (total)?

What is the MS (treatment)?

What is the MS (error)?

What is the test statistic, F?

What is the p-value?

What should we do with the null hypothesis?

fail to reject or reject

What does this test tell us about the safety of cars?

a. The smaller cars are safer.

b. The means are different, but we can't tell which is safest.

c.The larger cars are safer.

d.The size of the car has no impact on the severity of head injuries.