Please show your work and explain how you got to the answer, thank you.

Answer the following for each scenario below a) (3 points) A researcher is interested in the proportion of Corvallis residents that favor free community college tuition. The researcher randomly selected 1,000 people from the Corvallis phone book, called them, and asked those who answered whether or not they favored making community college tuitionfree for the first two years. All 1,000 people gave an answer. population of interest: parameter of interest: type of sampling design being used: b) (3 points) Researchers are interested proportion of OSU students that favor student debt forgiveness. 50 students were randomly selected from each college (total of 600 students) to participate in a survey. On this survey, one question reads, \"People committed to the cost of tuition when they took out their student loans. Considering this, do you think it's fair that some people should not be required to pay back their loans?\" A total of 398 surveys were returned. population of interest: parameter of interest: type of sampling design being used