Toxic Mushrooms? The null and alternative hypotheses obtained in Exercise 9.15 on page 397 are, respectively, H0: μ = 0.5 ppm Ha: μ > 0.5 ppm, where μ is the mean cadmium level in Boletus pinicola mushrooms.

i. σ = 0.37 ii. α = 0.05 iii. n = 12 iv. μa = 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85