Question

Political parties want to know what groups of people support them. The General Social Survey (GSS) asked its 2012 sample, "Generally speaking, do you usually think of yourself as a Republican, Democrat, Independent, or what?" The GSS is essentially an SRS of American adults. Here is a large two-way table breaking down the responses by the highest degree the subject held:

	NONE	HIGH SCHOOL	JR. COLLEGE	BACHELOR	GRADUATE
Strong Democrat	45	163	32	61	55
Not strong Democrat	45	176	24	63	35
Independent, near Democrat	34	121	9	44	33
Independent	104	189	25	38	26
Independent, near Republican	20	80	17	32	16
Not strong Republican	21	127	18	66	18
Strong Republican	11	102	17	47	19
Other party	8	26	5	9	10

Give a 95% confidence interval (±±0.0001) for the proportion of adults who are "Independent."

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Answer 1