2. (30 points]. 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 treatments [oars types]. Using the hypothetical data proytded below. test whether the mean pressure applied to the driver's head during a crash test ls equal for each types of car. Use or = 5%. a. State the null and alternate hypothesis for the data. b. Given the results. what will be the conclusion of the teanll'i'I