Two random samples, one of 95 blue-collar workers and a second of 50 white-collar workers, were taken from a large company. These workers were asked about their views on a certain company issue. The following table gives the results of the survey.

Using a 2.5% significance level, test the null hypothesis that the distributions of opinions are homogeneous for the two groups of workers.

Opinion Oppose 39 26 Favor Uncertain 12 Blue-collar workers White-collar workers 21