Question

Produce a 97% confidence interval for ρ if the proportion in a sample of size 320 is 0.58.

Answer 1

see table in the attachment

Answer 2

The standard error of the sample proportion is
\[\sqrt{\frac{p(1-p)}{n}}=you\ can\ calculate\]
When you have found the value of the standard error, the 97% confidence interval is:
\[0.58\pm(2.17\times\ standard\ error)\]