SOLUTION: I'm having some difficulty with this problem: FOX News conducted an online poll of 300 adults in February 2015. One question was “Do you think there should be more gun control l

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Question 1051022: I'm having some difficulty with this problem:
FOX News conducted an online poll of 300 adults in February 2015. One question was “Do you think there should be more gun control laws?”. 120 adults answered Yes.

Find a 95% confidence interval estimate of population proportion of adults who support more gun control laws. (Explain how you get the critical value, show work and round the answer to three decimal places)
Any help on this would be appreciated!
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
p = 120/300 = .4
Find a 95% confidence interval estimate of population proportion of adults who support more gun control laws.
x = 1.96
ME = z%2Asqrt%28%28p%281-p%29%29%2Fn%29
ME = 1.96%2Asqrt%28%28.4%2A.6%29%2F300%29 = .055
.4 ± .055
We are 95% confident that the population proportion of adults who support more gun control laws is:
between .345 and .455
0r
between
34.5% and 45.5%