Question 1193926
error=z(0.975)*sqrt(SE)=1.96*sqrt(0.5*0.5/n)=0.03
square both sides
3.8416*0.25/n=0.0009
n=3.8416*0.25/0.0009=1061.11 or 1068
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1.96*sqrt(0.62*0.38/n)/=0.03
3.8416*0.2356/n=0.0009
n=1005.65 or 1006