Question

A random sample of 5562 physicians in Colorado showed that 3062 provided at least some charity care (i.e., treated poor people at no cost).

(a) Let p represent the proportion of all Colorado physicians who provide some charity care. Find a point estimate for p. (Round your answer to four decimal places.)

(b) Find a 99% confidence interval for p. (Round your answers to three decimal places.) lower limit and upper limit

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.

(c) 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.)

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

lower limit
upper limit

and

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

Answer 1