QUESTION 4 Our class has 69 students. On a randomly selected day, 49 students attended class synchronously. What is the sample proportion of students taking the class synchronously? O a. 100% O b. 71% O C. 49% O d. 25% QUESTION 5 (Continued) Compute the estimated SE of the proportion. a. 0.6% O b. 5.5% O c. 20.6% O d. 45.4% QUESTION 6 (Continued) Make a 95% confidence interval for the proportion of students taking the class synchronously. a. (43.5%, 54.5%) O b. (65.5%, 76.5%) O c. (60%, 82%) O d. (50.4%, 91.6%)(Continued) Compute the margin of error. 7 3-0595 7 b5.5% ' c1.2% 41-11% QUESTION 8 Which of the following is not a characteristic of Students' tdistribution? . a. mean OH 7 b' For large samples, the t and z distributions are nearly equivalent. - c. depends on degrees of freedom. d' symmetric distribution QUESTION 9 To select the correct Student's tdistribution requires knowing the degrees of freedom. How many degrees of freedom are there for a sample of size n? ' a. _ I M 5/1/11 . b- n-1 r d'n+1