Question

Suppose the marketing research firm 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, 530 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:

	Social Media
Age (years)	Facebook	Twitter	LinkedIn
10-17	21	18	12
18-34	41	66	44
35-54	62	63	61
55 and older	61	43	38

At a significance level of 0.05 can we conclude that there is a relationship between age group of a social network user and the primary site the visit?

A) What is the question being asked?
B) What test should be run?

C) State the null and alternate hypothesis

D) Compute the value of the test statistic

E) Compute the P-Value

F) What is your decision regarding the null hypothesis? Interpret the result.

Answer 1

a) Is  there a relationship between age group of a social network user and the primary site the visit

b) Chisquare test for independence of attributes

c) H0:  there is a no relationship between age group of a social network user and the primary site the visit

H1:  there is a relationship between age group of a social network user and the primary site the visit

d) The observed frequencies are

The chi-square contribution values are

e) P-Value: 0.0702

f) Here P-value > alpha 0.05 so we accept H0

Thus we conclude that  there is a no relationship between age group of a social network user and the primary site the visit