Question 1173034
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Hi, 
c=0.​95 , o=9.7 ​, and E=1
ME ={{{( z*sigma)/sqrt(n)}}}
n = {{{((1.96*9.7)/1)^2)}}}  = 361.4+  0r 362 is the sample size needed

 = CI	z = value
90%	z =1.645
92%	z = 1.751
95%	z = 1.96
98%	z = 2.326
99%	z = 2.576