Smokers at a company were invited to participate in a smoking cessation program, and were randomly assigned to one of two groups. Those in the Reward group would get a cash award if they stopped smoking for 6 months. Those in the Deposit group were asked to deposit some money which they would get back along with a substantial bonus if they stopped smoking for 6 months. After six months, 156 of the 914 smokers who accepted the invitation to be in the reward-only program stopped smoking, while 78 of the 146 smokers who paid a deposit quit. A two-way table for this data is given below. (Be careful: "Total" rows/columns are not included.) Quit Smoking Yes No Treatment Group Reward 156 758 Deposit 78 68 Use this table to answer Problems 1-4. 1) How many people in the study had quit smoking after six months? Calculate the difference in proportion who quit smoking, , between those in the Deposit program and those in the Reward program. Write a sentence interpreting the value you calculated in context.
QUESTION 1
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Smokers at a company were invited to participate in a smoking cessation program, and were randomly assigned to one of two groups. Those in the Reward group would get a cash award if they stopped smoking for 6 months. Those in the Deposit group were asked to deposit some money which they would get back along with a substantial bonus if they stopped smoking for 6 months.
After six months, 156 of the 914 smokers who accepted the invitation to be in the reward-only program stopped smoking, while 78 of the 146 smokers who paid a deposit quit.
A two-way table for this data is given below. (Be careful: "Total" rows/columns are not included.)
Quit Smoking
Yes
No
Treatment Group
Reward
156
758
Deposit
78
68
Use this table to answer Problems 1-4.
1) How many people in the study had quit smoking after six months?
Calculate the difference in proportion who quit smoking, , between those in the Deposit program and those in the Reward program. Write a sentence interpreting the value you calculated in context.
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