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Independence Tests
13. Chi-Square Tests & Goodness of Fit / Independence Tests / Problem 2
Problem 2

A researcher collects data on 120120 college students, categorizing them by their major (Science, Arts, Business) and their preferred study method (Group, Solo, Mixed). The observed counts are as follows:
GroupSoloMixedScience101812Arts81410Business121620\(\begin{array}{c|ccc}\) & \(\text{Group}\) & \(\text{Solo}\) & \(\text{Mixed}\)\\ \(\text{Science}\) & 10 & 18 & 12\\ \(\text{Arts}\) & 8 & 14 & 10\\ \(\text{Business}\) & 12 & 16 & 20\\ & & & \(\end{array}\)
At α=0.01\(\alpha\)=0.01, test whether the type of major and preferred study method is independent.