{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Chapter9

# Chapter9 - ChapterNine 9 1 Estimation and Confidence...

This preview shows pages 1–6. Sign up to view the full content.

9- 1 Chapter Nine Estimation and Confidence Intervals Estimation and Confidence Intervals GOALS When you have completed this chapter, you will be able to: ONE Define a what is meant by a point estimate. TWO Define the term level of level of confidence. THREE Construct a confidence interval for the population mean when the population standard deviation is known. FOUR Construct a confidence interval for the population mean when the population standard deviation is unknown. Goals

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
9- 2 Chapter Nine   continued Estimation and Confidence Intervals Estimation and Confidence Intervals GOALS When you have completed this chapter, you will be able to: FIVE Construct a confidence interval for the population proportion. SIX Determine the sample size for attribute and variable sampling. Goals
9- 3 Point and Interval Estimates A confidence interval is a range of values within which the population parameter is expected to occur. The two confidence intervals that are used extensively are the 95% and the 99%. An Interval Estimate states the range within which a population parameter probably lies. A point estimate is a single value (statistic) used to estimate a population value (parameter).

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
9- 4 Factors that Factors that determine the determine the width of a width of a confidence confidence interval interval Point and Interval Estimates The sample size, n The variability in the population, usually estimated by s The desired level of confidence
9- 5 Interval Estimates For the 99% confidence interval, 99% of the sample means for a specified sample size will lie within 2.58 standard deviations of the hypothesized population mean. 95% of the sample means for a specified sample size will lie within 1.96 standard deviations of the hypothesized population mean.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 25

Chapter9 - ChapterNine 9 1 Estimation and Confidence...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online