The poll described in Exercise 29 also investigated the respondents party affiliations based on what area of the state they lived in. Test an appropriate hypothesis about this table and state your conclusions.
|
|
Democrat
|
Republican
|
Independent
|
|
West
|
39
|
17
|
12
|
|
Northeast
|
15
|
30
|
12
|
|
Southeast
|
30
|
31
|
16
|
Exercise :
A poll conducted by the University of Montana classified respondents by whether they were male or female and political party, as shown in the table. We wonder if there is evidence of an association between being male or female and party affiliation.
|
|
Democrat
|
Republican
|
Independent
|
|
Male
|
36
|
45
|
24
|
|
Female
|
48
|
33
|
16
|
a) Is this a test of homogeneity or independence?
b) Write an appropriate hypothesis.
c) Are the conditions for inference satisfied?
d) Find the P-value for your test.
e) State a complete conclusion.