please help this probability and statistics questions with clear steps and explanation, thankssss

A consumer organization was concerned about the differences between the advertised sizes of containers and the actual amount of product. In a preliminary study, six packages of each of three different brands of margarine that are supposed to contain 500ml were measured. The differences from 500ml are listed here. Brand 1 Brand 2 Brand 3 2 3 N IN 3 4 0 3 N 0 W A O Do these data provide sufficient evidence to conclude that differences exist among the three brands? At the significance level of 1%, answer Questions 13-15 below. Question 13: (1 Mark) State the null and alternative hypotheses. Question 14: (1 Mark) Find the value of the test statistics. Question 15: (1 Mark) Indicate the rejection region and state the conclusion