A study of six hundred adults found that the number of hours they spend on social networking sites each week is normally distributed with a mean of 17 hours. The population standard deviation is 6 hours. What is the margin of error for a 95% confidence interval?
A. 0.134
B. 0.220
C. 0.313
D. 0.480

Question

A study of six hundred adults found that the number of hours they spend on social networking sites each week is normally distributed with a mean of 17 hours. The population standard deviation is 6 hours. What is the margin of error for a 95% confidence interval?
A. 0.134
B. 0.220
C. 0.313
D. 0.480

anonymous · Answer

hold on a sec

anonymous · Answer

its C

anonymous · Answer

Thanks, ill give a medal but how did you get that?

anonymous · Answer

your welcome and because I multiplied