Suppose the marketing research firm comScore would like to examine if the social networking site that a person primarily uses is influenced by his or her age. In a randomly drawn sample, 335 social network users were asked which site they primarily visited. These data are presented in the following table along with each person's age group: Age group Facebook Twitter LinkedIn 2-17 25 14 3 18-34 100 30 11 35-54 98 18 19 55 and older 27 3 7 a. Using α = 0.05, perform a chi-square test to determine if the age group of social network users and the site they primarily visit are independent. b. What conclusions can be made based on these results? c. Determine the p-value using Excel and interpret its meaning.
Suppose the marketing research firm comScore would like to examine if the social networking site that a person primarily uses is influenced by his or her age. In a randomly drawn sample, 335 social network users were asked which site they primarily visited. These data are presented in the following table along with each person's age group:
Age group Facebook Twitter LinkedIn
2-17 25 14 3
18-34 100 30 11
35-54 98 18 19
55 and older 27 3 7
a. Using α = 0.05, perform a chi-square test to determine if the age group of social network users and the site they primarily visit are independent.
b. What conclusions can be made based on these results?
c. Determine the p-value using Excel and interpret its meaning.
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