The mean potassium content of a popular sports drink is listed as 133 mg in a 32-oz bottle. Analysis of 38 bottles indicates a sample mean of 132.4 mg. State the hypotheses for a two-tailed test of the claimed potassium content.
a. H₀: μ = 133 mg vs. H₁ : μ ≠ 133 mg
b. H₀: μ ≤ 133 mg vs. H₁ : μ > 133 mg
c. H₀: μ ≥ 133 mg vs. H₁ : μ < 133 mg