A study was recently conducted to see whether the mean starting salaries for graduates of engineering,business,healthcare,and computer information systems majors differ.A random sample of 8 graduates was selected from each major.Based upon this information,the appropriate null hypothesis to be tested is H₀ : μ₁ - μ₂ - μ₃ - μ₄ = 0

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The appropriate null hypothesis for comparing means across multiple groups is that all group means are equal, i.e., H₀: μ₁ = μ₂ = μ₃ = μ₄.

A Study Was Recently Conducted to See Whether the Mean