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L An example, cont Given in the problem u=12.1 minutes 0=2.0 minutes b)Less than 8.1 minutes x=8.1-121=-200 2.0 P(x<8.1)=P(z<-200) =.5-4772=0.0228 ?00 o 2002 The Wadsworth GroupAn Example, cont. Given in the problem: µ= 12.1 minutes, s = 2.0 minutes • b) Less than 8.1 minutes P(x < 8.1) = P(z < –2.00) = .5 – .4772 = 0.0228 z = x– s = 8.1–12.1 2.0 = –2.00 © 2002 The Wadsworth Group z = ? .00
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