Please help me with these questions

O All US adults Question 9 6 pts A doctor has invented a relaxation method that he thinks will relieve anxiety and help students score higher on exams. He wants to test the method on a group of statistics students to see if it improves their scores on the final exam. All of the students have volunteered to participate. What is the response variable for the experiment? O Students' overall GPA. O Whether students used the relaxation method or not Whether students liked the relaxation method. Students' score on the statistics final exam Question 10 6 ptsQuestion 8 6 pts In June 2019 CBS News and the New York Times reported the results of a poll about problems and priorities for the U.S. In the poll 979 U.S. adults answered the question, "What do you think is the most important problem facing this country today?" From a list of options, 63% of those polled said "economy/jobs." This is an observational study designed to answer a question about a population. What is the population? O the 53% who answered "economy/jobs" O the US adults who watch CBS News or read the New York Times the 979 US adults polled All US adults Question 9 6 pts has invented a relaxation method that he thinks will relieveQuestion 7 6 pts Determine the Type and Level of data for each of the following: . Make of automobile Type is [ Select ] Level is [ Select ] . Letter grade on an English essay Type is [ Select ] Level is [ Select ] . Temperature of a nuclear power plant core reactor . Type is [ Select ] Level is [ Select ] Question 8 6 pts