1. Based on a 2018 General Social Survey poll of 2,347 adult U.S. residents, a 95% confidence interval for the proportion of all U.S. adult residents who were born in the United States is 0.858 to 0.885.Based on these results, what can we conclude?
2. Consider the formula to calculate the standard error (SE) of the mean.Because the square root of n is in the denominator, this means that to cut the SE in half you need to multiple the sample size by
3. Which of the following factors affect the width of a theory-based confidence interval?
4. The Comprehensive Assessment of Outcomes in Statistics (CAOS) exam is an online,multiple-choice test on concepts covered in a typical introductory statistics course.Students take a pre-test version and post-test version after instruction.To see if students' test scores improve, which would be the most appropriate test to use?
5. A 95% confidence interval for a population proportion is (0.67, 0.83).What is the margin of error?