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%
-value or 95%
The empirical literature suggests that class absenteeism undermines students’ academic
performance and that an enforced mandatory attendance policy may be beneficial.
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
b. Two-sided t-test
d. Confidence Interval
2. What is the
-value/margin of error? (5 points)
3. What is the Statistical interpretation? (5 points)