STAT 2160 Business Statistics

A marketing research firm wanted to determine whether an individual's favored Age Group and Social Network were related. For age they grouped by 18-34, 35-55, and 55+ and the social networks they investigated were Facebook, Google+, and Twitter. The table below presents their findings. To test at the 0.05 level to determine if Age Group and Social Network are dependent, calculate the chi-square test statistic and p-value. Cross Tabulation of Age Group vs. Social Network Facebook Google+ Twitter 55+ 49 51 27 35-55 17 42 21 18-34 12 19 17 1) 10.145, the degrees of freedom is 9, and the p-value is 0.3389. 2) None of the other options are fully correct. ( 3) 14.025, the degrees of freedom is 4, and the p-value is 0.9619. ( 4) 10.145, the degrees of freedom is 4, and the p-value is 0.0381. ( 5) 10.145, the degrees of freedom is 4, and the p-value is 0.0500