When Testing H₀: μ₁ - μ₂ = 2,H_A: μ₁ - $\bar { X } _ { 1 }$

question 91

Essay

When testing H₀: μ₁ - μ₂ = 2,H_A: μ₁ - μ₂ > 2,where $\bar { X } _ { 1 }$
= 522, $\bar { X }_ { 2}$
= 516,s₁² = 28,s₂² = 24,n₁ = 40,n₂ = 30,at α = .01,what can we conclude?

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