20. Fifteen 5-to 6-week old male rats of approximately 100 grams body weight were used in an experiment. Five rats were allocated to each of three diets A, B, and C containing casein treated with methanol (HCHO) solution with respectively, 40, 70, and 100 grams HCHO/liter. The figures for the dry matter digestibility of the rats are shown in the table on the right. What test would you perform to show that there is a significant difference in the dry matter digestibility of the rats with changes in the level of methanol treatment of casein and is there (or is there not) a significant difference in the dry matter digestibility (Yes or No)? Carry out the test with a= 0.05. (Assume normally distributed dry matter digestibility) Diet A Diet B Diet C 0.894 0.894 0.892 0.899 0.895 0.896 0.897 0.897 0.897 0.897 0.897 0.899 0.902 0.902 0.900