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You want to estimate the mean weight of quarters in circulation. A sample of 60 quarters has a mean weight of 5.683 grams and a

You want to estimate the mean weight of quarters in circulation. A sample of 60 quarters has a mean weight of 5.683 grams and a standard deviation of .066 gram. Use a single value to estimate the mean weight of all quarters. Also, find the 95% confidence interval for the average weight of all quarters.

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