9.3 2 Way Tables - 3H!” Homewomz = 420,93 ems,“ ef...

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Unformatted text preview: 3H!” Homewomz = 420,93 ems,“ ef . Section 9.3 Two Way Tables or Contingency Tables Multinamial experiment with two qualitative variables Requiredcqnd’rtions mumnomml eircnmem Mb (A mm“ W” hJ 25, oxrcmca com 29 in mm Pie n - exrcoicd Test statistic: X 2 = Z ["4311]: Er = expected cell count = W ” “"5"” a tow mm Rejection region: R CJC 0" no ‘f x} > klotfiilefi’i) ‘II ROWS E Ex: At an assembly plant there are three shifts per day. The quality control manager wants to compare E the quality level on the three shifts. IEerggpmgléged here are classified as acceptable or unacceptable. is there a difference in the quality level on the three shifts at the 5% significance level? Is there a ' relationship between quality and shift when it was produced? ”‘3‘! “V8 e 1* i, 2““ 3" E. = Womb) .5329 m: meme *1: w -, nacce . N 1° . = J 69 9mm 00 ' "lo 3i0=h Eu (Jox'go): 26.551 . Zia _ . fia= mam ,8 shift are inacremmm (no relm‘lanlhlf) { you mnwnm nazmuuty in. shift me d-creiid‘ahi (mlmliommr) Humble: £63601 fl... lf= 3L:>Kz;fi;s,.acz't1,ea—'l> - - x; 7 vmm m .’ . a-y. mwiso'l‘umwmmfflfl { 3‘ r r. @225 an? giggmhmmlm ,' y 1st (ht-5;. 92: 72 ‘ '. an ...
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