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help in this A 95% confidence interval for a population mean is determined to be 100 to 120. If the confidence interval is increased to

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A 95% confidence interval for a population mean is determined to be 100 to 120. If the confidence interval is increased to 99%, the interval for the population mean: Select one: O a. does not change O b. becomes wider O c. becomes 0.1 O d. becomes narrower

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