In a survey of 1000 large corporations, 248 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        What is the margin of error based on a 95% confidence interval? (Round your answer to three decimal places.)

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Author:Amos Gilat
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Chapter1: Starting With Matlab
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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, 248 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      
 
What is the margin of error based on a 95% confidence interval? (Round your answer to three decimal places.)
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