Question 1054944
p = 450/600 = 3/4, q = 1/4
ME = {{{z*sqrt((p(1-p))/n)}}}
77% confidence level:  z = invNorm(.77 + .115) = invNorm(.885) = 1.2
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ME = ±{{{1.2*sqrt(((3/4)(1/4))/600)}}} = {{{highlight(1.2)}}} *.0177 = .02124  0r 2.1%
If these are Your choices...  2.5,2.4,3.4, and 5.4  
Might Check z (highlighted)
 77% ???  confidence level Haven't seen that before....