solve multiple choices pls PART LL Choose the letter of the correct answer.A. According to the Centers for Disease Control and Prevention, the proportion of U.S. adult age 25 orolder who smoke is 0.22. A researcher suspects that the rate is lower among U.S. adults 25 or older whohave a bachelor's degree or higher educational level.1. What is the null hypothesis in this case?A. The proportion of smokers among U.S. adults 25 or older who have a bachelor's degree orhigher is less than 0,22.B. The proportion of smokers among U.S. adults 25 or older who have a bachelor's degree orhigher is 0.22.C. There is no relationship between education and smoking habits.D. The proportion of smokers among U.S. adults 25 or older who have a bachelor's degree orhigher is not 0.22.2. What is the alternative hypothesis in this case?A The proportion of smokers among U.S. adults 25 or older who have a bachelor's degree orhigher is less than 0.22.B. The proportion of smokers among U.S. adults 25 or older who have a bachelor's degree orhigher is 0.22C. There is no relationship between education and smoking habits.D. The proportion of smokers among U.S. adults 25 or older who have a bachelor's degree orhigher is not 0.22.B. A study investigated whether there are differences between the mean IQ level of pcople who werereared by their biological parents and those who were reared by someone else.3. What is the null hypothesis in this case?A. The mean IQ level of people who were reared by their biological parents is lower than the15mean of those who were not.B. There is no difference between the mean IQ level of people who were reared by theirbiological parents and those who were not.C. There is a difference between the mean IQ level of people who were reared by theirbiological parents and those who were notD. The mean 1IQ level of people who were reared by their biological parents is higher than themean of those who were not.4. What is the alternative hypothesis in this case?A. The mean Q level of people who were reared by their biological parents is lower than themean of those who were not.B There is no difference between the mean IQ level of people who were reared by theirbiological parents and those who were not.C. There is a difference between the mean IQ level of people who were reared by theirbiological parents and those who were not.D. The mean 1Q level of people who were reared by their biological parents is higher than themean of those who were not

Question

Accepted Answer

1.
Null and alternative hypotheses:
The hypothesis, which is pre assumed as true, tentatively…