1. How many degrees of freedom does the chi-square statistic have? A) 6 B) 7 C) 12 D) 13 E) 14
2. What is the conclusion of the chi-square test at the 10% level? A) H0 is rejected. B) H0 is not rejected.

Frequency of Facebook status updates by sex of Facebook users of each sex who post with the following frequency. For instance, 3% of male Facebook users post status updates on Facebook several times a day. 25 24 20 21 20 18 15 16 16 17 15 % of users Male 10 12 12 10 Female 8 8 5 3 0 Several About once 3-5 days 1-2 Days Every Few Less Often Never times a day per day per week per week Weeks Source: Pew Research Center's Internet & American Life Social Network Site survey conducted on landline and cell phone between October 20-November 28, 2010. N for full sample 2,255 and margin of error is +/- 2.3 percentage points. N for Facebook users=877 and margin of error is +/- 3.6 percentage points