02514 03707 06293 07486 SolutionSo the probability is Pxbar

	0.2514
	0.3707
	0.6293
	0.7486

So the probability is

P(xbar<50000) = P((xbar-mu)/(s/vn) <(50000-54000)/(12000/sqrt(4)))

=P(Z<-0.67) =0.2514 (from standard normal table)

Answer: 0.2514

0.2514 0.3707 0.6293 0.7486 SolutionSo the probability is P(xbar<50000) = P((xbar-mu)/(s/vn) <(50000-54000)/(12000/sqrt(4))) =P(Z<-0.67) =0.2514 (from

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