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anonymous
 one year ago
In a sample of 200 households, the mean number of hours spent on social networking sites during the month of January was 55 hours. In a much larger study, the standard deviation was determined to be 7 hours. Assume the population standard deviation is the same. What is the 99% confidence interval for the mean hours devoted to social networking in January?
anonymous
 one year ago
In a sample of 200 households, the mean number of hours spent on social networking sites during the month of January was 55 hours. In a much larger study, the standard deviation was determined to be 7 hours. Assume the population standard deviation is the same. What is the 99% confidence interval for the mean hours devoted to social networking in January?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dude stawp tagging people ur just spamming now :/

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i answered this same question 15 minutes ago so lemmee see

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0one more tag then i quit

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The 99% confidence interval ranges from 55 to 60 hours. i think

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The 99% confidence interval ranges from 53.73 to 56.27 hours. The 99% confidence interval ranges from 7 to 55 hours. The 99% confidence interval ranges from 54.51 to 55.49. The 99% confidence interval ranges from 55 to 60 hours.
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