The below table gives the distribution of the opinions of 214 PC supporters and 53 Liberal supporters in the Edmonton study. The opinion question asked is the same as that used earlier. That is, respondents were asked their view concerning the opinion "Unemployment is high because trade unions have priced their members out of a job." Respondents gave their answers on a 7-point scale, with 1 being strongly disagree and 7 being strongly agree. Use the data in this table to test whether political preference and opinion are independent of each other or not. Use the 0.01 level of significance. Political Preference