Find a 95 Percent Confidence Interval for the Difference Between $\bar { X } _ { 1 }$

question 14

Essay

Find a 95 percent confidence interval for the difference between means,where n₁ = 50,n₂ = 36, $\bar { X } _ { 1 }$
= 80, $\bar { X } _ { 2 }$
= 75,s₁² = 5,and s₂² = 3.Assume unequal variances.

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