A company is considering an organizational change involving the use of self-managed work teams. To assess the attitudes of employees of the company toward this change, a sample of 400 employees is selected and asked whether they favor the institution of self-managed work teams in the organization. Three responses are permitted: favor, neutral, or oppose. The results of the survey, cross-classified by type of job and attitude toward self-managed work teams, are summarized as follows:

a. At the 0.05 level of significance, is there evidence of a relationship between attitude toward self-managed work teams and type of job?
The survey also asked respondents about their attitudes toward instituting a policy whereby an employee could take one additional vacation day per month without pay. The results, cross-classified by type of job, are as follows:

b. At the 0.05 level of significance, is there evidence of a relationship between attitude toward vacation time without pay and type of job?

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SELF-MANAGED WORK TEAMS TYPE OF JOB Hourly worker Supervisor Middle Favor Neutral Oppose Total 71 225 60 75 08 46 18 12 35 14 30 26 management Upper 40 management Total 185 79 136 400 VACATION TIME WITHOUT PAY TYPE OF JOB Favor Neutral Oppose Total 67 225 60 75 135 39 23 6 6 42 Hourly worker Supervisor Middle 14 management Upper 26 40 management Total 247 400