Question

Which sample size will produce a margin of error of ±6.3%?

A. 152
B. 114
C. 252
D. 550

Answer 1

If you use the formula
`ME = (1)/(√(n))` then,


`ME = (1)/(√(n))`


`0.063 = (1)/(√(n))`


`0.063*√(n) = 1`


`√(n) = (1)/(0.063)`


`√(n) \approx 15.87301587`


`n \approx (15.87301587)^2`


`n \approx 251.952632809271`


`n \approx 252`

So we need roughly 252 people

Answer: Choice C) 252