Question 865552
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Hi
3 = {{{2.3263(9/sqrt(n))}}}
n = (2.3263*9/3)^2 = 48.7 
n &#8805;  49 

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