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.

Do a 5 percent test to determine whether the group using both programs is more effective than the group using only the exercise program.

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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