Question

A survey shows that 45% of the respondents pick option A. Given that 50 people replied, what is the standard error of the proportion?

the choices are
A. 7.04%
B. 14.06%
C. 21.09%
D. 0.07%

Answer 1

\[SE=\sqrt{\frac{p(1-p)}{n}}=\sqrt{\frac{.45\times.55}{50}}=\cdots\]

Answer 2

i did and it didnt come out to any of the answers):

Answer 3

I get D. Are you sure you're typing it correctly into a calculator?