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QUESTION
You want to estimate the mean weight of quarters in circulation. A sample of 40 quarters has a mean weight of 5.655 grams and a standard deviation of...
You want to estimate the mean weight of quarters in circulation. A sample of
quarters has a mean weight of
grams and a standard deviation of
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 mean weight of all quarters is approximately
