Chapter 9
Estimation and Confidence Intervals
LEARNING OBJECTIVES
After studying this chapter, you should be able to
understand the concept of a confidence interval.
compute the margin of error associated with a sample mean and a proportion.
compute and interpret confidence interval estimates to know the precision of the estimate of a population mean and proportion.
identify factors that affect the precision of confidence intervals.
determine the sample sizes for different levels of precision.
Lest men suspect your tale untrue, keep probability in view.
—John Gay
When in doubt use a bigger hammer.
—Thomas L. Martin Jr.
9.1 INTRODUCTION
In Chapter 8, we have learnt how to use a sample data to draw statistical inference about the unknown ...
Get Business Statistics, Second Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
