You want to estimate the mean weight of quarters in circulation. A sample of 50 quarters has a mean weight of 5.676 grams and a standard deviation of 0.068 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.
The estimate for the mean weight of all quarters is ___ grams. (Round to one decimal place as needed.)
Find the 95% confidence interval for the mean weight of all quarters.
__ grams < μ
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