Question 3 1.5 pts An ANOVA is used to determine if mean of one population is greater than another find if the observations in each sample are independent of one another perform a hypothesis test comparing three or more populations at the same time perform a hypothesis test comparing two populations at the same time D Question 4 1.5 pts What is the alternative hypothesis for every ANOVA procedure? All means are not equal All means are equal O u1 > u2 > u3 u1