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Objectives* · Choosing the sample size ! t distributions ! One-sample t confidence interval for a population mean ! How confidence intervals behave Adapted ...
For 95 out of 100 (large) samples, the interval will contain the true population mean. But we don’t know ?!
Objectives (BPS chapter 18) Inference about a Population Mean Conditions for inference The t distribution The one-sample t confidence interval
Confidence Limits on Mean Sample mean is a point estimateSample mean is a point estimate We want interval estimateWe want interval estimate Probability.
Overview 8.1 Z Interval for the Mean 8.2 t Interval for the Mean 8.3 Z Interval for a Population Proportion 8.4 OMIT 8.5 Sample Size Considerations.
1 Chapter 8 Interval Estimation. 2 Chapter Outline Population Mean: Known Population Mean: Unknown Population Proportion.
Chapter Outline 2.1 Estimation Confidence Interval Estimates for Population Mean Confidence Interval Estimates for the Difference Between Two Population.
+ The One-Sample z Interval for a Population Mean In Section 8.1, we estimated the “mystery mean” µ (see page 468) by constructing a confidence interval.