Chapter9
BPS - 5th Ed. Chapter 191 Inference about a Population Proportion.
Copyright © 2010 Pearson Education, Inc. Slide 19 - 1.
Chapter 15
Copyright © 2010, 2007, 2004 Pearson Education, Inc. Chapter 19 Confidence Intervals for Proportions.
Confidence Intervals for Proportions Chapter 19. Standard Error Both of the sampling distributions we’ve looked at are Normal. – For proportions – For.
A Confidence Interval Recall that the sampling distribution model of is centered at p, with standard deviation. Since we don’t know p, we can’t find the.
Estimating a Population Proportion Goal: Given a sample proportion, estimate the value of the population proportion p. Example: In a sample of 750 people,
1 Sampling Distributions Presentation 2 Sampling Distribution of sample proportions Sampling Distribution of sample means.
Chapter 12 Inference for Proportions
Sampling Distribution ● Tells what values a sample statistic (such as sample proportion) takes and how often it takes those values in repeated sampling.
Population We are almost always interested in knowledge about a population. We would have little interest in samples if we could always ask everyone.
