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Social Networking Sites A recent survey of 8 social networking sites has a mean of 13.05 million visitors for a specific month. The standard deviation

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Social Networking Sites A recent survey of 8 social networking sites has a mean of 13.05 million visitors for a specific month. The standard deviation was 4.6 million. Find the 80% confidence interval of the true mean. Assume the variable is normally distributed. Use a graphing calculator and round the answers to at least one decimal place. X 5

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