Question

1,200 employees of a company were surveyed to find out whether they were satisfied with the company’s insurance policy. The survey showed that 80% of the respondents were not satisfied with the policy.
The standard error of the proportion is
%. The number of people who are satisfied with the policy is between
% and
%.

Answer 1

what are you asking for?

Answer 2

You're missing some information. The standard error is defined as \(\Large SE = \frac{\sigma}{\sqrt{n}} \)

But in order to find \(\sigma\) we need the original data (x) and the mean.
\(\large \sigma = \sqrt{\frac{\sum (x_i-x)^2}{n-1}} \)

Answer 3

the standard error of the proportion is like 1.16%.