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laughoutloud
 one year ago
MEDAL AND FAN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! HELP?
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?
laughoutloud
 one year ago
MEDAL AND FAN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! HELP? 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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laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.1The 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.

Griffindore
 one year ago
Best ResponseYou've already chosen the best response.0Sorry i thought iknew but i dont

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok got it what do u think it is

laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.1I have no idea how to solve it so if i guessed i would say c

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hahaha good job u got a gift but u need to do the math next time
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