A sample of employees at a large chemical plant was asked to indicate a preference for one of three pension plans. The results are given in the following table. Does it seem that there is a relationship between the pension plan selected and the job classification of the employees? Use the 0.01 significance level.     Pension Plan Job Class Plan A Plan B Plan C Supervisor 50 58 40 Clerical 38 57 39 Labor 42 67 20

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