A 95% confidence interval estimate for the difference between two population means, 12000, is determined to be (62.75, 68.52

Question

A 95% confidence interval estimate for the difference between two population means, 12000, is determined to be (62.75,
68.52.) If the confidence level is reduced to 90%, the confidence interval

(A) insufficient information
(B) becomes narrower
(C) becomes wider
(D) remains the same

Kunduz · Accepted Answer

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