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Examine the following formula for a confidence interval for the population mean when the population standard deviation is known: I q x1258 What is the

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Examine the following formula for a confidence interval for the population mean when the population standard deviation is known: I q x1258 What is the confidence level (if not exact, choose the closest one)? Q A. 95% O B. 92% O C. 99% o 9.90%

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