In a completely randomized design, 12 experimental units were used for the first treatment, 15 for the second treatment, and 20 for the third treatment. complete the following analysis of variance (to 2 decimals, if necessary). if your answer is zero enter "0". source of variation sum of squares degrees of freedom mean square f treatments 1200 error total 1800 at a .05 level of significance, is there a significant difference between the treatments? the p-value is what is your conclusion?