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In an industry,200 workers,employed for a specific job,were classified according thier performance and training received/not received...

In an industry,200 workers,employed for a specific job,were classified according thier performance and training received/not received to test independence of specific trainig and performance.The dates is

Good Not Good Total
Trained 100 50 150
Untrained 20 30 50
Total 120 80 200

5% level of significance

Math   Statistics-And-Probability   
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