Abrand of cereal had 1.2 milligrams of iron per serving. then they changed their recipe so they had 1.8 (mg) of iron per serving. what was the percent increase in iron?

Apolice office claims that the proportion of people wearing seat belts is less than 65%. to test this claim, a random sample of 200 drivers is taken and its determined that 126 people are wearing seat belts. the following is the setup for this hypothesis test: h0: p=0.65 ha: p< 0.65 find the p-value for this hypothesis test for a proportion and round your answer to 3 decimal places.