If you use the formula [tex]ME = \frac{1}{\sqrt{n}}[/tex] then,
[tex]ME = \frac{1}{\sqrt{n}}[/tex]
[tex]0.063 = \frac{1}{\sqrt{n}}[/tex]
[tex]0.063*\sqrt{n} = 1[/tex]
[tex]\sqrt{n} = \frac{1}{0.063}[/tex]
[tex]\sqrt{n} \approx 15.87301587[/tex]
[tex]n \approx (15.87301587)^2[/tex]
[tex]n \approx 251.952632809271[/tex]
[tex]n \approx 252[/tex]
So we need roughly 252 people
Answer: Choice C) 252
