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, 242 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.Report the margin of error. Report p̂ along with the margin of error. What is the margin of error based on a 95% confidence interval? (Round your answer to three decimal places.)
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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, 242 said that, given a choice between a job candidate who smokes and an equally qualified nonsmoker, the nonsmoker would get the job.
(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?
What is the margin of error based on a 95% confidence interval? (Round your answer to three decimal places.)
1000 large corporations are surveyed.
242 are in favor of non smoking candidates.
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