(i) Survey random samples of 40 seniors, 40 juniors, 40 sophomores, and 40 freshmen, and get them to report the number of credits they are taking. Sample standard deviations are 3.1, 3.4, 1.9, and 2.7.

(ii) Survey random samples of 20 seniors, 20 juniors, 20 sophomores, and 20 freshmen, and get them to report the number of credits they are taking. Sample standard deviations are 3.1, 5.4, 1.9, and 2.7.

Which of the above two designs should not be handled with ANOVA?