L21ConfIntervalsMeanProportion

L21ConfIntervalsMeanProportion - MGT 2250 —— Lesson 21...

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Unformatted text preview: MGT 2250 —— Lesson 21 Confidence Intervals for the Population Mean and Proportion March 16, 2011 Definition: A confidence interval (C.I.) is an interval (range) calculated around a sample mean (Q7) such that there is a specific probawllilitlgfpflnmfidence level) that the population mean (in) would fall within that interval. L) Margin of Error: W _‘ im“ 4% \x 9 (fit X [A «t KW W WWW 59?? at f {:fm is. g Develo in the conce tofa Confidence Interval: fl P g P fiw 33% W. 5:; r L21ConflnterMeanProp 3.) 4.) Levels of Confidence, Confidence Coefficients and alpha Handout WWWWM WQ W Calculating a Confidence Interval: M/ W“ a: “WWW egw :W" gm Cal“ >4 W gag/Lax; X , \ 1“} y W /"V Z \ K“? { yak M «we, a gfi/fl/ // \K M! 2a :Wwwl TQQW Definition: A confidence intewaLfior the proportion (C.I.) is an interval (range) calculated around a sample proportion C‘“ ) such that there is a specific probability (confidence level) that the population proportio 4%)) would fall within that interval. 1.) Calculating 3 Confidence Interval for a Proportion: ‘‘‘‘‘‘‘‘‘‘ x my} We? g j \J ‘ <3 j [:3 iii/tag 9’ ““““““““““““““ ’’’’ " E W , \w AWN “W Mott M g Gina a a aw m, $135.2? 4 n 2 o M“ ‘3 “:1: w ” t «a E ,' 0 M W" L rwgflw in; t; a 962%11 t {w a W W #31:? 5 Mg :2. {Tm MW f S 5 W #6:» sf, {iv/5% “V “if , v 5/ he” E5” 6:} f a?) ii??? a, my, Kim I ‘ 2/2”“ n LZlConflnterMeanProp g M g {i} é ’2- ...
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This note was uploaded on 02/05/2012 for the course MGT 2250 taught by Professor Milne during the Summer '08 term at Georgia Tech.

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L21ConfIntervalsMeanProportion - MGT 2250 —— Lesson 21...

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