document.write( "Question 426971: Help me please, I am going to flunk this class if I don't get at least one answer correct!
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Algebra.Com's Answer #296942 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi
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document.write( "What critical region(s) for z would be used to test the hypotheses:
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document.write( " H_0:μ=10 and H_a:μ≠10, for a = 0.05\r
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document.write( "1) See chart below for the various confidence levels
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document.write( "2) As sample mean, in the question posed, could be more or less than 10. 
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document.write( "Two-tailed critcal regions would be the appropriate choice:
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document.write( "either z<-1.96 or z>1.96 depending on the sample mean being <10 or >10
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document.write( "	a	a/2	crtical regions	
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document.write( "90%	0.1	5%	z <-1.645	z >+1.645
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document.write( "95%	0.05	2.50%	z <-1.96	z >+1.96
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document.write( "98%	0.02	1%	z <-2.33	z >+2.33
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document.write( "99%	0.01	0.50%	z<-2.575	z >+2.575
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