I need help calculating chi square for B. Suppose a marketing research firm woul

Question

I need help calculating chi square for B.

Suppose a marketing research firm would like to examine if the social networking site that a person primarily uses is influenced by his or her sample, 363 social network users were asked which site they primarily visited. These data are presented in the following table along with ea Complete parts a. through c. below. Click the icon to view the data table. i Data Tablet OA. Ho: Age group and social networking site are independent of one an H1: The social networking site used affects the age group B. Ho: Age group and social networking site are independent of one ar H: Age group and social networking site are not independent of on C. Ho : Age group and social networking site are independent of one a Social N Age Group Site A Site B Site c 2-17 18-34 35-54 55+ 12 25 100 40 11 97 17 18 26 H4: The age group affects the social networking site 7 Ho: Age group and social networking site are not independent of on H1: Age group and social networking site are independent of one ar 0 D. Print Done Calculate the chi-square test statistic. If necessary, combine age groups. 2- 14.36 (Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Che Clear All parts remaini

Explanation / Answer

Answe:

Expected frequecny is calculatedas

E=row total*column total/Grand total

answer:14.36 is correct

Age group SiteA SiteB SiteC Row total 2-17 25 12 5 42 18-34 100 40 11 151 35-54 97 17 18 132 55+ 26 5 7 38 Column total 248 74 41 363 ---Grand total 0 E O-E (O-E)^2 (0-E)^2/E 25 28.69421 -3.69421 13.64722 0.475609 12 8.561983 3.438017 11.81996 1.380516 5 4.743802 0.256198 0.065638 0.013836 100 103.1625 -3.16253 10.00162 0.09695 40 30.78237 9.217631 84.96472 2.760175 11 17.0551 -6.0551 36.66419 2.14975 97 90.18182 6.818182 46.4876 0.515488 17 26.90909 -9.90909 98.19008 3.648956 18 14.90909 3.090909 9.553719 0.640798 26 25.96143 0.038567 0.001487 5.73E-05 5 7.746556 -2.74656 7.543572 0.973797 7 4.292011 2.707989 7.333204 1.708571 CHI SQ TEST SAT 14.3645

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