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Suppose a researcher wants to obtain a narrower confidence interval. Which of the following actions would result in narrower confidence interval? A. Increase the confidence
Suppose a researcher wants to obtain a narrower confidence interval. Which of the following actions would result in narrower confidence interval? A. Increase the confidence level from 95% to 99% B. Increase the sample standard deviation C. Increase the sample size D. Use a larger Z score that is further from the mean
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