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A recent study of 8 randomly selected social networking sites has a mean of 13.1 million visitors for a specific month. The standard deviation is

A recent study of 8 randomly selected social networking sites has a mean of 13.1 million visitors for a specific month. The standard deviation is 4.1 million. Find the 95% confidence interval of the true mean. Do not round the t value from the table. Round the interval to the tenths place

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