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 Favor Neutral Oppose Total 225 60 108 18 Hourly worker Supervisor Mikidle management 35 Upper management 24 Total 46 12 14 71 30 26 9 40 183 36 400 79 VACATION TIME WITHOUT PAY TYPE OF JOB Favor Neutral Oppose Tta 135 39 Hourly worker Supervisor Middle management 47 Upper management 26 23 67 14 22 225 60 75 40 6 Total 247 41 4