Question: What critical value should be used to construct a 90% confidence interval for the population mean when the population standard deviation is known? Choose the

What critical value should be used to construct a 90% confidence interval for the population mean when the population standard deviation is known? Choose the correct answer below. O A. Z= 1.96 O B. z= 1.645 O C. A z-value greater than 1.695, but the exact value depends on the sample size. O D. A z-value that is equal to the z-statistic calculated from a hypothesis test

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