75% of an SRS of 350 taxpayers said that they intended to withhold more money from their pay for Federal taxes. Construct a 99% confidence interval estimate for the proportion of this population of taxpayers who intend to withhold more money from their pay for Federal taxes. a) Construct the margin of error. b) Calculate the endpoints. c) Write the interval.

A sample of n = 200 college students are asked if they believe in extraterrestrial life and 120 of these students say that they do. The data are used to test if more than half of college students believe in extraterrestrial life. d. Find a 95% confidence interval   e. Write a conclusion for the confidence interval

According to recent data by the American Marketing​ Association, 76.5​%of people in the​ 18-24 age group used social media in 2017. You want to find out what the social media proportion is among your classmates who are all between 18 and 24 years old. Suppose you obtain a random sample of 229 students and find that 202 students in this sample are active social media users. Complete parts a through c below.   a. Construct a 99​% confidence interval to estimate the actual proportion of social media users. A 99​% confidence interval to estimate the actual proportion has a lower limit of------ and an upper limit of------- ​(Round to three decimal places as​ needed.) b. What is the margin of error for this​ sample? c. Is there evidence that this proportion matches that of the overall population based on the​ sample?

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…