SOLUTION: A private opinion poll is conducted for a politician to determine what proportion of the population favors adding more national parks. How large a sample is needed in order to be 9
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-> SOLUTION: A private opinion poll is conducted for a politician to determine what proportion of the population favors adding more national parks. How large a sample is needed in order to be 9
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Question 1053144: A private opinion poll is conducted for a politician to determine what proportion of the population favors adding more national parks. How large a sample is needed in order to be 90% confident that the sample proportion will not differ from the true proportion by more than 6%?
How can I solve this with a calculator? Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! ME =
0r
n =
ME = .06
z = 1.645
= CI z = value
90% z =1.645
92% z = 1.751
95% z = 1.96
98% z = 2.326
99% z = 2.576
