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4. Test the null hypothesis of independence of the two classifications A and B of the 4x2 contingency table shown here. Use a =0.10. (10)

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4. Test the null hypothesis of independence of the two classifications A and B of the 4x2 contingency table shown here. Use a =0.10. (10) B B1 Al 43 139 A Az 47 138 A3 39 150 AA 50 142

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