Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize cars, and full-size cars. It collects a sample of three for each of the car types. State the null and alternative hypotheses. Using the hypothetical data provided below, test whether the mean pressure applied to the drivers head during the crash test is equal for each type of car. Use an of 5%. Construct an ANOVA table.

Compact cars: 643 655 702

Midsize cars: 469 427 525

Full-size cars: 484 456 402