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Transcript of Statistics Project
As presented by:
Dong Chan Yang
Social media is becoming a revolutionizing and unavoidable aspect of our daily lives. Founded in 2004, "Facebook" has become one of the most popular social networking services to date. As a feature whose initial purpose was to create an online environment for Harvard students to gather on the web, Facebook now hosts approximately 1.11 billion users. Of those 1.11 billion users, approximately 665 million are active each day.
In 2012, NBC News posted an article stating that on average, a person spends 13 minutes on Facebook.
that the average time spent on Facebook is not 13 minutes.
Through the application of statistics, we will conduct a hypothesis test to test our claim.
We believe otherwise...
Ho: µ = 13 minutes
Ha: µ ≠ 13 minutes
The average amount of time spent on Facebook is not 13 minutes.
s = 28.019
n = 30
36.667 - 13
(degrees of freedom = n - 1 = 29)
= 0.01, the critical values are ± 2.704.]
[At a confidence level of 99% with
In addition, the 'p' value in this situation is approximately 0.0007 which is well below the significance level of 0.01
Reject the null hypothesis (Ho)
There is sufficient evidence to conclude that the average amount of minutes spent on Facebook is not 13 minutes.
Nicholas, Carlson. "At Last -- The Full Story Of How Facebook Was Founded
Craig, Smith. "By the Numbers : Facebook Stats." Expanded Ramblings
. N.p., 23 Jun 2013. Web. 22 Jul 2013. <http://expandedramblings.com/index.php/17-amazing-facebook-stats/>.
Helen A.S., Popkin. "We Spent 230,060 Years on Social Media in One Month." CNBC
. N.p., n.d. Web. 22 Jul 2013. <http://www.cnbc.com/id/100275798>.
FBI - Facebook Investigators