STATS FINAL ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS

STATS FINAL ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS When determining the sample size for a proportion for a given level of confidence and sampling error, the closer to 0.50 that π is estimated to be, the sample size required ________. - Answer -larger The width of a confidence interval estimate for a proportion will be - Answer -narrower for 90% confidence than for 95% confidence. A 99% confidence interval estimate can be interpreted to mean that - Answer -both of the above If you were constructing a 99% confidence interval of the population mean based on a sample of n = 25, where the standard deviation of the sample s = 0.05, the critical value of t will be - Answer -2.7970.Need assistance on Online classes, Exams & Assignments? Reach out for instant help!! Full Course Assistance, Plagiarism-free Essay Writing, Research Paper, Dissertation, Discussion Posts, etc…. Confidential & Secure services. Tutors are available for all subjects! Email now at: Which of the following is NOT true about the Student's t distribution? - Answer -It is used to construct confidence intervals for the population mean when the population standard deviation is known. Suppose a 95% confidence interval for μ turns out to be (1,000, 2,100). Give a definition of what it means to be "95% confident" as an inference. - Answer -In repeated sampling, 95% of the intervals constructed would contain the population mean. Suppose a 95% confidence interval for has been constructed. If it is decided to take a larger sample and to decrease the confidence level of the interval, then the resulting interval wid