A financial group claimed that more than 71 percent of all individuals 66 to 69 are adequately prepared financially for retirement. However many financial planners have expressed concern that a smaller percentage of this age group who did not complete high school are not represented will with this number. they created a simple random sample of 300 people in this age group who did not complete high school and found that 165 were not prepared for retirement. Use a 0.1 significance level to test the original claim.

A survey showed that among 785 randomly selected subjects who completed four years of college, 173 of them smoked during college. Use a 0.01 significance level to test the claim that the rate of smoking among those with four years of college is more than the general population which has a rate of smoking of 27 percent.