5 How many observations are in this data set? a. 40 b. 6 C. 3 d. 5 Questions 3, 4, and 5 are based on the following information: In many universities, students evaluate their professors by means of answering a questionnaire. Assume a questionnaire is distributed to a class of 40 students. Stuants are asked to answer the following: 1. Sex, 2. Age, 4. Number of hours completed, 5. Grade point average, 6. My instructor is very effective teacher 1 2 3 4 5 strongly agree moderately agree neutral moderately disagree strongly disagree