Hi,

See below for the rejection areas at various levels of confidence for larger samples

 .01 then... below -2.58 and above 2.58 would be the rejection areas	

a	a/2	crtical regions	

90%	0.1	5%	z <-1.645	z >+1.645

92%	0.8	4%	z <-1.751	z >+1.751

95%	0.05	2.50%	z <-1.96	z >+1.96

98%	0.02	1%	z <-2.33	z >+2.33

99%	0.01	0.50%	z<-2.575	z >+2.575

 

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