Constructing the confidence interval
I need step-by-step instruction on the following problem:
Use the sample data and confidence level to construct the confidence interval estimate of the population proportion of p.
n=500, x=200 95% confidence
I’ve worked through a portion of it but I don’t understand how to look up and find the critical value in table A-2 and I think I did it wrong anyway. So I need this step-by-step, please. Thanks.