L21ConfIntervalsMeanProportion

L21ConfIntervalsMeanProportion - MGT 2250 —— Lesson 21...

This preview shows pages 1–3. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

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- ...
View Full Document

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.

Page1 / 3

L21ConfIntervalsMeanProportion - MGT 2250 —— Lesson 21...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online