You are tasked with analysing the results of an experiment testing the efficacy of two new chermotherapy drugs in comparison to the drug currently marketed by your company. The response variable is the change in tumor size measured in milligrams. The explanatory variables are the different drug treatments: the currently used drug (control, labelled C), new drug A, and new drug B in two doses, low (B_L) and high (B_H). Your goal is to determine which of the drugs, if any, have a significant effect on the response variable, and in which direction, and whether either of the new drugs are strong candidates for potential use (after further testing of course!), while answering/doing the following: What are the assumptions of the statistical test(s) that could be used to analyze this data and are those assumptions met for your dataset? Include one graph in your answer with a brief explanation of what the graph demonstrates, as well as the results of two sets of statistical analyses with single-sentence conclusions with respect to the null hypotheses.