Question

What Do People Do on Facebook?

In a survey of 2255 US adults, we learn that 970 of the respondents use the social networking site Facebook.¹Of the 970 Facebook users, the survey shows that on an average day:

• 15% update their status
• 22% comment on another’s post or status
• 20% comment on another user’s photo
• 26% ‘‘like” another user’s content
• 10% send another user a private message.

¹Hampton, K., Goulet, L., Rainie, L., and Purcell, K., ‘‘Social Networking Sites and Our Lives,” Pew Research Center, June 16, 2011.

(a) For each of the bulleted activities, find a 99% confidence interval for the proportion of Facebook users engaging in that activity on an average day.

Round your answers to three decimal places.

Bulleted Activities		Confidence Interval
Update status:			to
Comment on another’s post or status:			to
Comment on another user’s photo:			to
‘‘Like” another user’s content:			to
Send another user a private message:		___________________________	to	____________________________

(b) Is it plausible that the proportion commenting on another’s post or status is the same as the proportion updating their status?

Yes or No?

Answer 1

Answer: ---- Date: ----16/7/2019