Suppose a researcher is planning a step-by-step smoking cessation program aimed

Question

Suppose a researcher is planning a step-by-step smoking cessation program aimed at youth aged 16-18 years old that have been smoking for over a year. After 1 month, the program is intended to get people down below 1 pack of cigarettes (20 cigarettes) a week. Suppose after 1 month, a group of 62 smokers in this age range are smoking an average of 11.6 cigarettes a week with a standard deviation of 2.7. Is there sufficient evidence that the cessation program is working? Set up your hypotheses and interpret your p-value correctly using the alpha level of 0.05.

Explanation / Answer

H0:mu=20

H1: mu<20

excel is used for the analysis.

Since p <0.05, we reject H0 and conclude that the programe is working.

Hypothesis Test: Mean vs. Hypothesized Value 20.000 hypothesized value 11.600 mean number 2.700 std. dev. 0.343 std. error 62 n -24.50 z 0.00E+00 p-value (one-tailed, lower)

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