Question

For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.

In a survey of 1000 large corporations, 256 said that, given a choice between a job candidate who smokes and an equally qualified nonsmoker, the nonsmoker would get the job.

(a) Let p represent the proportion of all corporations preferring a nonsmoking candidate. Find a point estimate for p. (Round your answer to four decimal places.)


(b) Find a 0.95 confidence interval for p. (Round your answers to three decimal places.)

lower limit
upper limit

(c) As a news writer, how would you report the survey results regarding the proportion of corporations that would hire the equally qualified nonsmoker?

Report p̂ along with the margin of error.

Report p̂.  

Report the margin of error.

What is the margin of error based on a 95% confidence interval? (Round your answer to three decimal places.)

Answer 1