From a random sample of 48 business days from May 9, 2016, through May 7, 2021, U.S.
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From a random sample of 48 business days from May 9, 2016, through May 7, 2021, U.S. gold prices had a mean of $1404.09. Assume the population standard deviation is $232.09.
you are given the sample mean and the population standard deviation. Use this information to construct 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals.
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