4 17. A researcher is interested in seeing if the amount of protein in a pigeon's feed influences the rate at which the pigeon pecks a key to receive a reward. She randomly assigns the pigeons to one of the three different types of feed: Type A, which has a large amount of protein; Type B, which had a moderate amount of protein; and Type C, which had very little protein. Are their significant differences in the rate of pecking based on food type? The data follows: Type A 20 25 25 20 30 n1= X = = = Type B 30 35 35 35 33 35 m= X= . = = Type C 20 35 40 40 n3= 45 X;= ; = = a. Is this a between-subjects design or within- subjects design? (1 point) k= N= T= [X= Calculate the effect size using omega squared. (2 points) o. Interpret your effect size results. (1 point)