Online purchase. Research in e-Journal Ekonomi Bisnis dan Akuntansi (Vol. 7, 2020) analyzes the effect of price, ease of transaction, information quality, safety, and trust on online buyers’ purchase decisions. The sample in the research consists of 100 students of the Department of Management, Faculty of Economics and Business, University of Jember. The numbers of respondents who used online sites for buying and selling, trading, Kaskus, and other purposes are listed in the accompanying table and saved in a file.

a. If the true proportion of online site types among the students are the same, what is the expected frequency for each of the type of online site?

b. Give the null hypothesis for testing whether the true proportions of types of online site are the same.

c. Compute the Chi-square test statistic for testing the null hypothesis in part

b. d. Find the rejection region for the test if a = .01.

e. Give the appropriate conclusion for the test in the words of the problem. Online Site Type Number of Respondents Buying & Selling Forum 42 Trading 23 Kaskus 20 Others 15 Total 100