1 question, Population proportion help. I need to figure out how to work it.

Question

jessicawade · Answer

A survey of 865 voters in one state reveals that 408 favor approval of an issue before the legislature. Construct the 95% confidence interval for the true proportion of all voters in the state who favor approval.
 	
	A)0.435 < p < 0.508
	B)0.438 < p < 0.505
	C)0.471 < p < 0.472
	D)0.444 < p < 0.500

jessicawade · Answer

i know that 95% is 1.96 but thats all i have and i got stuck

aum · Answer

There is no mean or standard deviation given for the problem?

jessicawade · Answer

i dont think so

jessicawade · Answer

i think 865 is the p. Population proportion and 408 the P^ which is the sample proportion

jessicawade · Answer

hmm

jessicawade · Answer

im not sure

jessicawade · Answer

ok hmm let me know and i will try to work it out also

aum · Answer

This has a formula and an explanation: https://answers.yahoo.com/question/index?qid=20080227152939AAAHJ8t

jessicawade · Answer

thank you :)

aum · Answer

You are welcome.

jessicawade · Answer

what site did you use originally?

jessicawade · Answer

@aum