# Homework 11.docx - Homework 11 Task 1 In what follows use...

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Homework 11 / Task 1 In what follows use any of the following tests/procedures: Regression, confidence intervals, one-sided t-test, or two-sided t-test. All the procedures should be done with 5% P -value or 95% confidence interval. The empirical literature suggests that class absenteeism undermines students’ academic performance and that an enforced mandatory attendance policy may be beneficial. Open Attendance data. Using data on 90 second-year students enrolled in a Statistics course, test if students who are assiduous in attending lectures have higher final grades than students who are usually absent. 1. What test/procedure did you perform? (5 points) a. One-sided t-test Correct Answer
b. Two-sided t-test c. Regression d. Confidence Interval 2. What is the P -value/margin of error? (5 points) Correct Answer
3. What is the Statistical interpretation? (5 points)
b. The P -value is greater than 5% thus the answer is inconclusive. c. The P -value is much smaller than 5% thus we are very certain that the slope is not zero. d. None of these Correct Answer 4. What is the conclusion? (5 points)