Question 1177253
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Hi
 {{{z =blue (x - mu)/sqrt(blue(p(1-p)/n)) = ME/sqrt(blue(p(1-p)/n))}}}
n = {{{(z/ME)^2 (p(1-p)))}}}   Using p = .5 as none is given
95% confidence level,  z = 1.96,  ME = .03

n = (1.96/.03)^2 (.5*.5) = 1067.1111

n = 1068 rounding up to nearest whole number

Wish You the Best in your Studies.
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