Chapter 13, Problem 13.2P

$\boxed{PS}$ Problem 12.4 presented data on ten precincts. The information is reproduced here.

Precinct	Percentage Democrat	Percentage Minority	Percentage Voter Turnout
A	33	9	36
B	78	15	60
C	62	18	64
D	50	10	56
E	45	12	55
F	56	8	52
G	85	20	25
H	25	0	42
I	13	5	89
J	33	9	88

Take voter turnout as the dependent variable and do the following:

a. Find the multiple regression equations (unstandardized).

b. What turnout would you expect for a precinct in which 0% of the voters were Democrats and 5% were minorities?

c. Compute beta-weights for each independent variable and compare their relative effect on turnout. Which was the more important factor?

d. Compute $R^2$.

e. Write a paragraph summarizing your findings.

12.4 $\boxed{PS}$ The following variables were collected for a sample of ten precincts during the last national election. Compute $r$ and $r^2$ for each combination of variables and write a paragraph interpreting the relationship between these variables. Take voter turnout as the dependent variable.

Precinct	Percentage Democrat	Percentage Minority	Percentage Voter Turnout
A	33	9	36
B	78	15	60
C	62	18	64
D	50	10	56
E	45	12	55
F	56	8	52
G	85	20	25
H	25	0	42
I	13	5	89
J	33	9	88