A tennis instructor wants to determine if a particular training regiment emphasizing tness is more effective for training beginners than the regiment emphasizing technique that he has been using. He has a total of 52 students. He debates between two different methods: I. In the first, he randomly assigns 25 of his new students and puts them on the fitness regiment. The other 27 students are placed on the technique regiment. After 2 weeks, he measures their progress, then switches each group to the other regiment. After another 2 weeks, he remeasures their progress. II. In the second, he randomly assigns 25 of his new students to be placed on the fitness regiment. The other 2? students are placed on the technique regiment. He then compares the average progress between the two groups. (a) Which one of the designs is a matched pairs design? Neither design 0 Design {onlyr 0 Design II onl\\_.r 0 Both designs [b] Why.r would the instructor randomlyr assign which students receive which regiment in design II? Select all that apply. D He wants to give himself the best chance at getting two groups similar in all important aspects. He wants to get a sample of new students that represents all tennis beginners. He wants to be able to sayr that the difference in regiments causes the difference in progress