If you wish to construct a confidence interval estimate for the difference between two population means, an increase in the sample sizes used will result in a decrease in the critical value z a narrower confidence interval a wider confidence interval confidence interval that contains zero

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Question: If you wish to construct a confidence interval estimate for the difference between two population means, an increase in the sample sizes used will result

If you wish to construct a confidence interval estimate for the difference between two population means, an increase in the sample sizes used will result in

a decrease in the critical value z
a narrower confidence interval
a wider confidence interval
confidence interval that contains zero

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