Find the confidence level if:
n1=95
n2=85
p hat 1=0.767
p hat 2=0.662
Suppose that the data yields (-0.0199, 0.2299) for a confidence interval for the difference p1−p2 of the population proportions. What is the confidence level? (Give answer in term of percentage.)

Question

Find the confidence level if:
n1=95
n2=85
p hat 1=0.767
p hat 2=0.662
Suppose that the data yields (-0.0199, 0.2299) for a confidence interval for the difference p1−p2 of the population proportions. What is the confidence level? (Give answer in term of percentage.)

perl · Answer

hmm, is there a formula we should use

anonymous · Answer

I am not sure. This person was asked a similar question but I can't figure out how the person who answered it solved it. http://au.answers.yahoo.com/question/index?qid=20131203205635AAUjLns