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15. A survey will be given to 120 students randomly selected from first-year students population? at the University of Houston-Downtown during the spring semester. What is the a. The 120 selected students b. All first-year students at the University of Houston-Downtown d c. All students at the University of Houston-Downtown All first-year students at the University of Houston-Downtown during the spring semester 16. In problem 16, what is the sample? a. The 120 selected students b. All first-year students at the University of Houston-Downtown c. All students at the University of Houston-Downtown d. All first-year students at the University of Houston-Downtown during the spring semester 17. Which of following data would be considered nominal data? a. The types of cars driven by students in your class b. The letter grades earned by students in statistics course in your class c. The grade point averages (GPA's) of the students in your class d. The number of times a person goes to the gym in a week 18. Which of the following data would be considered ordinal data? a. The types of cars driven by students in your class b. The letter grades earned by students in statistics course in your class c. The grade point averages (GPA's) of the students in your class d. The number of times a person goes to the gym in a week 19. Which of the following data would be considered interval data? a. The types of cars driven by students in your class b. The letter grades earned by students in statistics course in your class c. The grade point averages (GPA's) of the students in your class d. The number of times a person goes to the gym in a week 20. Which of the following data is an example of Ratio data? a. The types of cars driven by students in your class b. The letter grades earned by students in statistics course in your class c. The grade point averages (GPA's) of the students in your class d. The number of times a person goes to the gym in a week