EC 285 - Ch. 08 - Confidence Intervals
EC 285 - Chapter 8 - Confidence Intervals
Textbook: Introductory Business Statistics 2e (OpenStax), Chapter 8 · Slides: Chapter 8 slides
Goals (from the slides)
- Point estimators and their properties: unbiasedness, efficiency
- Point estimate vs. interval estimate; confidence level and confidence coefficient
- Confidence interval for a population mean - Z (sigma known) and t (sigma unknown)
- Confidence interval for a population proportion
- Common confidence levels; t approaches Z as n grows