The results of a mathematics placement exam at two different campuses of Mercy College follow: What is the null hypothesis if we want to test the hypothesis that the mean score on Campus 1 is higher than on Campus 2? A)H₀: µ₁ = 0 B)H₀: µ₂ = 0 C)H₀: µ₁ = µ₂ D)H₀: µ₁ ≤ µ₂

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The null hypothesis should state that there is no significant difference between the mean scores on Campus 1 and Campus 2. The best choice for this is D, where the null hypothesis states that the mean score on Campus 1 is less than or equal to the mean score on Campus 2. This allows us to test if there is evidence that Campus 1 has a significantly higher mean score than Campus 2.

The Results of a Mathematics Placement Exam at Two Different