SOLUTION: Is the environment a major issue with Americans? To answer that question, a researcher conducts a survey of 1255 randomly selected Americans. Suppose 747 of the sampled people repl

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Question 1149103: Is the environment a major issue with Americans? To answer that question, a researcher conducts a survey of 1255 randomly selected Americans. Suppose 747 of the sampled people replied that the environment is a major issue with them. Construct a 95% confidence interval to estimate the proportion of Americans who feel that the environment is a major issue with them. What is the point estimate of this proportion?


(Round the intermediate values to 3 decimal places. Round your answer to 3 decimal places.)
enter the lower limit of the confidence interval

≤ p ≤
enter the upper limit of the confidence interval



The point estimate is ?






Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
point estimate is 0.595, 747/1255
half-interval is z*sqrt(p*(1-p)/n)=1.96 *sqrt(0.595*0.405/1255)
=0.027
the 95% CI is(0.568, 0.622)