Assume that σ1 = σ2 = σ. Sample 1: 80, 80, 79, 81, 76, 66, 71,
76, 70, 85. Sample 2: 79, 62, 70, 68, 73, 76, 86, 73, 72, 68, 75,
66. Construct a 95% confidence interval for μ1- μ2
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Assume that σ1 = σ2 = σ. Sample 1: 80, 80, 79, 81, 76, 66, 71,
76, 70, 85. Sample 2: 79, 62, 70, 68, 73, 76, 86, 73, 72, 68, 75,
66. Construct a 95% confidence interval for μ1- μ2