Use the following information to answer question. As a result of the rising costs in health insurance, an insurance company decides to help its clients improve their health and cut down their bills. Thirty large companies that bought the group health insurance were picked to institute a “quit smoking”
program and/or an exercise program. The amounts by which insurance claims were reduced are ranked in the following table.

Can you argue that the three different groups are equally effective in reducing insurance claims? Do a 5 percent test.

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"Quit smoking" program 1 4 12 16 17 18 24 27 28 29 Exercise program 3 2 10 14 15 19 21 25 26 30 Both programs 56 7 8 9 11 13 20 22 23