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15-11-2022
Mathematics

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)Fromarandomsampleof48businessdaysfromJanuary4,2010,through February 24, 2017, U.S. gold prices had a mean of $1368.48. Assume the population standard deviation is $202.60. Find the margin of error and construct a 90% confidence interval.
(b) For problem 1, what would happen to the confidence interval if the sample

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