Sample Size Estimates
	Stratified Random Samples For Selected Confidence Intervals
	Persons Below 200 Percent of Poverty in Delaware
	Assuming Dicotomous Variables
	Estimates Calculated by Steven W. Peuquet
	Center for Community Research & Service
	University of Delaware
		1	2	3	4		5		6		7
							Sample				Number of
		Confindence	Chi Squared	Population	Population		Size		Estimated		People to
	Area	Interval (+/-)	95% Level of	Size	Parameter		(Responses)		Response		Receive
		C	Significance	N	P		Needed		Rate		Questionnairs
	Suburban New Castle County	7%	3.841	53,484	0.5		195		25%		781
		6%	3.841	53,484	0.5		265		25%		1,062
		5%	3.841	53,484	0.5		381		25%		1,525
		4%	3.841	53,484	0.5		594		25%		2,374
		3%	3.841	53,484	0.5		1,046		25%		4,184
	Wilmington	7%	3.841	27,061	0.5		195		25%		778
		6%	3.841	27,061	0.5		264		25%		1,057
		5%	3.841	27,061	0.5		379		25%		1,515
		4%	3.841	27,061	0.5		587		25%		2,349
		3%	3.841	27,061	0.5		1,027		25%		4,106
	Kent County	7%	3.841	32,742	0.5		195		25%		779
		6%	3.841	32,742	0.5		265		25%		1,058
		5%	3.841	32,742	0.5		380		25%		1,519
		4%	3.841	32,742	0.5		589		25%		2,357
		3%	3.841	32,742	0.5		1,033		25%		4,133
	Sussex County	7%	3.841	35,142	0.5		195		25%		780
		6%	3.841	35,142	0.5		265		25%		1,059
		5%	3.841	35,142	0.5		380		25%		1,520
		4%	3.841	35,142	0.5		590		25%		2,360
		3%	3.841	35,142	0.5		1,036		25%		4,142
	Statewide Level Comparing Unstratified and Stratified
	Statewide with no strata	7%	3.841	148,429	0.5		196		25%		783
		6%	3.841	148,429	0.5		266		25%		1,065
		5%	3.841	148,429	0.5		383		25%		1,532
		4%	3.841	148,429	0.5		598		25%		2,391
		3%	3.841	148,429	0.5		1,059		25%		4,237
	Statewide - sum of strata	7%					780				3,118
		6%					1,059				4,236
		5%					1,520				6,079
		4%					2,360				9,441
		3%					4,141				16,566