A certain survey conducted had a population proportion of at most 22% for people who agreed. What is the confidence level if 20% of the people sampled agreed, and the standard error of the proportion is ±1%?
A.68%
B.70%
C.99.7%
D.100%
E.95%
(please help)

Question

A certain survey conducted had a population proportion of at most 22% for people who agreed. What is the confidence level if 20% of the people sampled agreed, and the standard error of the proportion is ±1%?
A.68%
B.70%
C.99.7%
D.100%
E.95%
(please help)

amistre64 · Answer

hmm, standard error can relate to standard deviation ....

consider this as asking a mean of 22, an x of 20 and a standard deviation of 1

amistre64 · Answer

since 20 is 2 away from 22 ... thats 2 standard errors  giving us an empirical rule of 95%

amistre64 · Answer

that would be my best assessment

anonymous · Answer

Thank you very much :)

amistre64 · Answer

youre welcome.  memory is a bit foggy on it, so i hope its the right direction.  I cant guarentee its correctness at the moment tho