A growing concern for educators in theUnited States is the number of teenagers whohave part-time…

A growing concern for educators in theUnited States is the number of teenagers whohave part-time jobs while they attend high school.It is generally believed that the amount of timeteenagers spend working is deducted from theamount of time devoted to schoolwork. To inves-tigate this problem, a school guidance counselortook a random sample of200 15-year-old highschool students and asked how many hours perweek each worked at a part-time job. Estimatewith95% confidence the mean amount of time all15-year-old high school students devote per weekto part-time jobs