QMS 202 Study Guide - Final Guide: Simple Linear Regression, Null Hypothesis, Railways Act 1921

• School: Ryerson University
• Department: Quantitative Methods
• Course: QMS 202
• Professor: Clare Chua- Chow

Document Summary

Confidence interval: (intr) the true difference in means falls in-between the confidence interval. 1-sample z interval - calculates the confidence interval for an unknown population mean when the population standard deviation is known. 2-sample z interval - calculates the confidence interval for the difference between two population means when the population standard deviations of two samples are known. 1-prop z interval - calculates the confidence interval for an unknown proportion of successes. 2-prop z interval - calculates the confidence interval for the difference between the proportion of successes in two populations. 1-sample t interval - calculates the confidence interval for an unknown population mean when the population standard deviation is unknown. 2-sample t interval - calculates the confidence interval for the difference between two population means when both population standard deviations are unknown. C level : confidence interval x with dash on top: mean sx: standard deviation n: sample size.