Gold Prices From a random sample of 48 business days from January 4, 2010, through February 24,
Question:
Gold Prices From a random sample of 48 business days from January 4, 2010, through February 24, 2017, U.S. gold prices had a mean of $1368.48. Assume the population standard deviation is $202.60.
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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a Construct 90 and 95 confidence intervals for the populati...View the full answer
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Related Book For 
Elementary Statistics Picturing The World
ISBN: 9780134683416
7th Edition
Authors: Ron Larson, Betsy Farber
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