Question 1180812
z(0.98)=2.054
96% half-interval is z(0.98)* sqrt(p(1-p)/n). The half-interval=error=0.02
error=2.054*sqrt((.13*.87)/n))
.02*sqrt*n)=2.054 * sqrt (.1131)
.02 sqrt(n)=0.6908
n=1192.90=1193