A government agency in a Northestern city wishes to evaluate the effectiveness of a recently launched program to prevent alcohol drinking among teenagers. Before the program was lauched a study found that the proportion of teen-drinking in the city was 13%. They select a random sample of n=100 teenagers and found that 9 of them had drank alcohol. Using a significance level of 5%, what would be the conclusion of a hypothesis test to determine if the proportion of teen-drinking in the city has decreased ?
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Reject Ho, there is evidence that the proportion of teen-drinking has decreased
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Do not Reject Ho. There is no evidence that the proportion of teen drinking has decreased
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Cannot be determined based on the information given
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