Explain briefly.

Problem 1. Suppose the Land Transportation Office (LTO) wants to examine the safety of compact cars, midsize cars, and full-size cars. The LTO Officer collects a sample of three for each of the treatments using the hypothetical data, and he wants to test whether the mean pressure applied to the driver' s head during a crash test is equal for each types of car. What specific statistical tool can be applied to this kind of research study?