7. From November 21 - 25, Quinnipiac University surveyed 1,355 self-identified registered voters nationwide to determine the 2020 Democratic Presidential nomination. The survey found that 24% supported Joe Bide, 13% supported Bernie Sanders and 15% supported Elizabeth Warren. All other candidates had support under 10% a. Identify the sample of the study. Be specific. (2 pts) b. Identify the population of the study. (2 pts) C. How many people in the sample claim they will vote for Joe Bide? (2 pts) 8. Circle the variables that are categorical? (5 pts) weight height eye color age hair color 9. The infamous MAT130 Exam 3 taken by 226 students at Jackson College during the Fall 2019 semester had a mean of approximately 61% and a standard deviation of about 22%. Two students both scored a 68%. Student A calculated their z-score as .318 and Student B calculated their z-score as 65.23. a. Student was correct. Explain how you know. (2 pts) Student was incorrect. Explain how you know. (2 pts)