Question 1058505
The CI for a proportion is zsqrt(p*(1-p))/n}, 1.75 is z
0.04=1.75 * sqrt term
square both sides
0.0016=3.0625*.5*.5/n.  We use 0.5, since p*(1-p) is maximum (largest sample size) for p=0.5
0.0016n=1.53125
n=957.03, round to 958.