Answer to Question #29654 in Statistics and Probability for meenasaran

Question

Two research workers classified some people in income groups on the basis of sampling studies. Their results are as follow:


Investigators Income groups
Total
Poor Middle Rich
A 160 30 10 200
B 140 120 40 300
Total 300 150 50 500
Show that the sampling technique of atleast one research worker is defective.