laughoutloud
  • laughoutloud
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?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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laughoutloud
  • laughoutloud
The 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.
laughoutloud
  • laughoutloud
@phi
laughoutloud
  • laughoutloud
@Jaynator495

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laughoutloud
  • laughoutloud
@slade
Griffindore
  • Griffindore
Sorry i thought iknew but i dont
laughoutloud
  • laughoutloud
its ok ty
anonymous
  • anonymous
ok got it what do u think it is
laughoutloud
  • laughoutloud
I have no idea how to solve it so if i guessed i would say c
anonymous
  • anonymous
u got it correct
laughoutloud
  • laughoutloud
how?
anonymous
  • anonymous
did u just gess
laughoutloud
  • laughoutloud
yes completely
anonymous
  • anonymous
hahaha good job u got a gift but u need to do the math next time
laughoutloud
  • laughoutloud
ok! TYSM!!!!
anonymous
  • anonymous
welcome

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