Question: Shown below is 2*3 contingency table with observed value from a sample of 500. At 95% confidence using the critical value approach, test the independency

Shown below is 2*3 contingency table with observed value from a sample of 500. At 95% confidence using the critical value approach, test the independency of the row and column function.

Row factor. x y z

A 40 60 110

B 60 100 140

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