A new program was created to help people smoke less. Table 5.13 gives the average number of

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A new program was created to help people smoke less. Table 5.13 gives the average number of cigarettes smoked (per day) before participating in the program and the average number of cigarettes (per day) after participating in the program for a sample of nine program participants. Can you conclude whether the program was effective in helping people to smoke less?

Table 5.13

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