Confidence interval for proportion-automobile while drinking

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Reference no: EM1321232

A study was conducted to investigate drinking problems among college students. In 1983, a group of students were asked whether they had ever driven an automobile while drinking. In 1987 after the legal drinking age was raised, a different group of college students were asked the same question. The results are as follows.

Drove While Drinking	Year		Total
Drove While Drinking	1983	1987	Total
Yes	1250	991	2241
No	1387	1666	3053
Total	2637	2657	5294

Calculate separately for 1983 and 1987, the 95% confidence interval for the proportion of students who had driven an automobile while drinking.

Reference no: EM1321232

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