You want to estimate the mean weight of quarters in circulation. A sample of 60 quarters has
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Question:
You want to estimate the mean weight of quarters in circulation. A sample of 60 quarters has a mean weight of 5.651 grams and a standard deviation of 0.055 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.
The 95% confidence interval ranges from about ____ grams to _____ grams.
Related Book For
Statistical Reasoning for Everyday Life
ISBN: 978-0321817624
4th edition
Authors: Jeff Bennett, Bill Briggs, Mario F. Triola
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