MGCR 271 Chapter 8: MGCR 271 - Chapter 8

• School: McGill University
• Department: Management Core
• Course: MGCR 271
• Professor: Glenn Zabowski

Document Summary

Inference about population proportions is based on sample proportions. A sample proportion has a distribution that is close to normal unless the sample is small. All the procedures work well when the samples are large enough. Recognize from design of a study whether one-sample or two-sample procedures are needed. Recognize what parameter or parameters an inference problem concerns. It is important to distinguish between settings that require inference about a proportion and comparing two proportions. Calculate from sample counts the sample proportion or proportions. Use the procedure to give a con dence interval for a population proportion . Use the statistic to carry out a test of signi cance for the hypothesis (cid:2868): = (cid:2868) about a population proportion against either a one-sided or a two-sided alternative. Check that you can safely use these procedures in a particular setting. Use the two-sample procedure to give a con dence interval for the difference (cid:2869) (cid:2870)