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We are interested in estimating the mean amount of rain last month in our county.It is known that the population standard deviation is 1.5 inches
We are interested in estimating the mean amount of rain last month in our county.It is known that the population standard deviation is 1.5 inches generally for the month of interest. 49 instruments that measure rainfall were placed throughout the county randomly. The sample mean from the instruments was 5.2 inches.Calculate a 95% confidence interval for the population mean of rainfall last month in the county. [Reference:
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