This is the question.

An experiment was run to investigate the amount of weight lost (in grams} by ground beef ham burgers aer grilling or frying, and how much the weight loss is affected by the percentage fat in the beef before cooking. Hamburger patties weighing 110g each were prepared from meat with the required fat content. Postcooking weight data (in grams} for the meat cooking experiment Frying Grilling Fat content Fat oontent 10% 15% 20% 10% 15% 20% El 35 "II 84 83 T3 30 310 T7 84 88 T5 35 32 72 82 85 T8 34 310 310 El 86 T9 34 32 310 86 88 82 (b) Calculate the sample sizes needed for an analysis of variance test with or : 0.05 to have power 0.90 if: (i) .0. = 5.0; (ii) .0. = 10.0