Use appropriate nonparametric test to answer the questions, such as Kruskal-Wallis test, Friedmans test ect. A pharmaceutical manufacturer wants to investigate the bioactivity of a new drug. A completely randomized single factor experiment was conducted with three dosage levels and the following results were obtained. Dosage Observations 20g 24 28 37 30 30g 37 44 31 35 40g 42 47 52 38 (a) Is there evidence to indicate that dosage level affects bioactivity? Use =0.05. (b) If it is appropriate to do so, make comparisons between the pairs of means. What conclusions can you draw? (c) Analyze the residuals from this experiment and comment on model adequacy Use appropriate nonparametric test to answer the questions, such as KruskalWallis test, Friedman's test... ect. A pharmaceutical manufacturer wants to investigate the bioactivity of a new drug. A completely randomized single factor experiment was conducted with three dosage levels and the following results were obtained. Dosage Observations 20g 24 28 37 30 30g 37 44 31 35 40g 42 47 52 38 (a) Is there evidence to indicate that dosage level affects bioactivity? Use =0.05. (b) If it is appropriate to do so, make comparisons between the pairs of means. What conclusions can you draw? (c) Analyze the residuals from this experiment and comment on model adequacy