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Statistics

You want to you want to estimate the mean weight of quarters in circulation. A sample of 30 quarters has a mean weight of 5.649 grams in a standard deviation of 0.066 gram. Use a single value to estimate the mean weight of all quarters. Also, what would the 95% confidence interval for the average weight of all quarters be? what would the mean weight be for all the quarters in approximately grams be rounded to the nearest thousand?

Statistics and Probability, Statistics

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