A survey of TWU students was conducted. The survey was sent out to 1000 students. Complete responses were received from 498 students. The following questions are based on this sample. 1. The distribution of students in the sample according to class level was: Seniors 128 Juniors 121 Sophomores99 Freshmen150 a. Estimate a 95% Confidence Interval for the proportion of students who are freshmen. b. Estimate a 90% Confidence Interval for the proportion of students who are seniors. 2. The proportion of transfer students to non transfer students in the sample is 62% to 38%. What is the margin of error for the proportion of transfer students in the population? Use a z value of 1.96 which corresponds to a confidence interval of 95%. 3. Students were given a 5 point scale to indicate their level of satisfaction with the quality of online instruction. The average satisfaction was 2.31 with a standard deviation of 1.02. Construct a 95% confidence interval for the average satisfaction. 4. Students rated their average satisfaction with instruction in face to face classes at 2.92 with a standard deviation of 0.8. Construct a 95% confidence interval for the average satisfaction. 5. Compare your answers in questions 4 & 5. What do your results tell you about how students view online and face-to-face instruction?