A political science professor is interested in finding out whether there is a relation between political affiliation and attitude towards a recent Supreme Court ruling about challenges to federal affirmative -action programs. He samples a group of registered voters at random and organizes the data obtained in the contingency table below.
According to this information, what can he conclude about the relationship he is interested in studying?
Use the Chi-Square/Cross Tab
Attitude towards the ruling
|
Political Affiliation
|
Approve
|
Do Not Approve
|
Not Sure
|
Total
|
|
Democrats
|
10
|
15
|
5
|
30
|
|
Republicans
|
15
|
15
|
10
|
40
|
|
Independent
|
6
|
4
|
5
|
15
|
|
Total
|
31
|
34
|
20
|
85
|
Include each of the following components, Null hypothesis, alternative hypothesis, appropriate statistical test, sample size, level of significance, determination of the critical region, calculated test statistic, decision about the null hypothesis interpretation of results, and a list of references consulted.