An investigator is interested in determining the association between employment at three different companies (A, B and C) and caffeine intake (in mglday, continuous variable). She suspects that employees at company A (which is known in the industry to oven/vork their staff) drink the most caffeine on average. Which analysis is most appropriate for determining if there are differences in mean caffeine intake across the three companies? 0 One sample test for proportions O Logistic regression 0 Two sample test for proportions 0 Two sample test for means 0 Linear regression 0 ANOVA 0 One sample test for means