Question

What is the standard error of the proportion if 80% of the 1,200 respondents in a yes/no survey answered "no"?

Answer 1

A.3.46%
B.2.31%
C.1.15%
D.2.58%
E.1.29%

Answer 2

@whpalmer4

Answer 3

@amistre64

Answer 4

Okay, we did one just like this yesterday...

http://openstudy.com/study#/updates/51dae0cee4b0d9a104d950f1

Answer 5

standard error for a sample proportion, p = 0.8, n = 1200

\[SE = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.8(1-0.8)}{1200} }=\]