Question

1. In a survey of 2383 U.S. adults, 1073 think that there should be more government regulation of oil companies. (Adapted from Harris Interactive)

(a) Find the point estimate for the population proportion p of U.S. adults who think that there should be more government regulation of oil companies.

(b) Construct a 95% confidence interval for the population proportion. Interpret the results.

(c) Find the minimum sample size needed to estimate the population proportion at the 99% confidence level in order to ensure that the estimate is accurate within 3% of the population proportion.

Answer #1

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