Question: The Engineering Faculty Association (EFA) of a certain university wishes to establish a long - term disability insurance plan for its members. Moon Life, the insurance company selected by the EFA to provide this service offers three packages R1, R2 and R3. In order to find the preferences of the members, the president of EFA conducted a survey. The result are tabulated below:

Use the data obtained from the survey to test the hypothesis that “Insurance Package” and “Rank” are independent events. Let α=0.05.