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 management 35 Upper management 24 Favor Neutral Oppose Total 71 225 30 60 26 75 940 136 400 108 18 46 12 14 Total 185 79 VACATION TIME WITHOUT PAY TYPE OF JOB Favor Neutral Hourly worker 135 23 Supervisor Middie Oppose Total 67 225 60 75 14 39 47 management Upper 26 8 40 management 247 T11 400 Total