Smith who will run for mayor conduct a survey of voters.?

sample voters 400 revealed that 300 would support him in election.


Develop a 99% confidence interval for proportion of voters in population who would support Smith.

Smith who will run for mayor conduct a survey of voters.?
I'll help, another stats prob


--------------------------------------...


this is another confidence interval test for proportions





You can learn more with this website:


http://davidmlane.com/hyperstat/B9168.ht...





----------------------------------





Use:


p +- z* rad(p(1-p)/n)





p = 300/400 = .75





99%CI= .75 +- 2.576rad(.25*.75/400)


= (.694,.806)





QED, Alva.Deli