For part B, construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. b2. In a survey of 2241 U.S. adults in a recent year, 650 made a New Year's resolution to eat healthier.
5B. For part B, construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals.
b2. In a survey of 2241 U.S. adults in a recent year, 650 made a New Year's resolution to eat healthier.
5C. For part C, construct a 99% confidence interval for the population proportion. Interpret the results.
c1. In a survey of 1000 U.S. adults, 700 think police officers should be required to wear body cameras while on duty.
c2. In a survey of 600 United Kingdom teachers, 226 say they would wear a body camera in school.
5d. You wish to estimate, with 95% confidence, the population proportion of U.S. adults who think congress is doing a good or excellent job. Your estimate must be accurate within 4% of the population proportion.
d1. No preliminary estimate is available. Find the minimum sample size needed.
d2. Find the minimum sample size needed, using a prior survey that found that 25% of U.S. adults think congress is doing a good or excellent job.
dc. Compare the results from parts d1 and d2.
5E. In a survey of 1000 U.S. adults, 490 oppose allowing transgender students to use the bathrooms of the opposite biological sex. Construct a 90% confidence interval for the population proportion of u>s. adults who oppose allowing transgender students to use the bathrooms of the opposite biological sex.
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