A Confidence Interval for A Population Proportion · Exercise 36
According to a recent survey of 1,200 people, 61% feel that the president is doing an acceptable job. We are interested in the population proportion of people who feel the president is doing an acceptable job.
(a) Define the random variables X and P′ in words.
(b) Which distribution should you use for this problem? Explain your choice.
(c) Construct a 90% confidence interval for the population proportion of people who feel the president is doing an acceptable job.
(a) State the confidence interval.
(b) Sketch the graph.
This is an open-ended exercise: its source gives no single answer.
OpenStax, Introductory Business Statistics 2e · §8.3 A Confidence Interval for A Population Proportion · Exercise 36
No hints for this one.
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