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James Ambercrombie believes that the average return on equity in the utility industry, µ, is greater than 10%. What is null (H0) and alternative (Ha) hypothesis for his study? A. H0: µ = 0.10 versus Ha: µ ≠ 0.10. B. H0: µ ≤ 0.10 versus Ha: µ > 0.10. C. H0: µ ≥ 0.10 versus Ha: µ < 0.10. |