Question 610021
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi, 
33 adult men had a mean weight of 182.5 pounds and a standard deviation of
22.5 pounds
ME = 2.576*22.5/sqrt(33) = 10.1		
CI: 182.5-10.1 < u <182.5 +10.1
  CI: 172.4 < u <192.6	
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	a	a/2	crtical regions	
80%	0.2	10%	z <-1.28155	z >+1.28155
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<-2.576	        z >+2.576