(Answered) Question two random samples were obtained independently and

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Question: Two random samples were obtained independently and the resulting data are given on the text website. Assume both populations are normal with σ₁ = 8 and σ₂ = 12.

a. Find a 95% confidence interval for the true difference in means, μ₁ - μ₂.

b. Using the confidence interval in part (a), is there any evidence to suggest that the two population means are different? Justify your answer.

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