1. We want to test if college students take less than five years to graduate from college, on the average. The null and alternative hypotheses are:
2. We want to test if it takes fewer than 45 minutes to a lesson. State the null and
alternative hypotheses, Fill in the correct symbol (5, 7, 3, 5, 5, >) for the null and
alternative hypotheses.
3. In an issue of U. S. News and World Report, an article on school standards stated that
about half of all students in France, Germany, and Israel take advanced placement
exams and a third pass. The same article stated that 6.6% of U. S. students take
advanced placement exams and 4.4% pass. Test if the percentage of U. S. students
who take advanced placement exams is more than 6.6%. State the null and
alternative hypotheses.
4. On a state driver's test, about 40% pass the test on the first try. We want to test if
more than 40% pass on the first try. Fill in the correct symbol (5, 7, 2, 5, 5, >) for the
null and alternative hypotheses.
5. A study conducted at a school showed that the batteries used by calculators
lasted an average of 110 days with a margin of error of £10 %.