16. Trout experiment, continued Suppose the trout experiment of Exercise 15 is to be repeated with the same v = 4 treatments, and suppose that the same hypothesis, that the treatments have no effect on hemoglobin content, is to be tested. (a) For calculating the number of observations needed on each treatment, what would you use as a guess for o?? (b) Calculate the sample sizes needed for an analysis of variance test with a = 0.05 to have power 0.95 if (i) A = 1.5. (ii) A = 1.0. (iii) A = 2.0