Mathematics, 05.02.2020 09:55 elsabramasco1161

In a sample of 50 households, the mean number of hours spent on social networking sites during the month of january was 45 hours. in a much larger study, the standard deviation was determined to be 8 hours. assume the population standard deviation is the same. what is the 95% confidence interval for the mean hours devoted to social networking in january?

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In a sample of 50 households, the mean number of hours spent on social networking sites during the m...