Overview
A university is considering implementing of the following three grading systems:
1) All grades are pass-fail
2) All grades are on the 4.0 system
3) 90% of the grades are on the 4.0 system and 10% are pass-fail.
A survey is taken to determine whether there is a relationship between undergraduate major and grading system preference. A random sample of 200 students with fine arts majors is selected. Each student is asked which of the three grading system he or she prefers. The results are shown in the following 3x3 contingency table:
Pass-fail4.0 and pass-fail4.0(totals)Fine arts265519100Arts and Science2411858200Engineering2011268200(totals)70285145500
- What is the independent and the dependent variable?
- What is the null hypothesis?
- What is the test result? (Possible bonus points when you complete the test)
- Will you reject of fail to reject the null based on the test result.