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Chapter 8

Chapter 8

Chapter 8. 8-1. Confidence Intervals and Sample Size. Outline. 8-2. 8-1 Introduction 8-2 Confidence Intervals for the Mean [ ? Known or n ?? 30] and Sample Size ? 8-3 Confidence Intervals for the Mean [ ? Unknown and n ?? 30]. Outline. 8-3.

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6.2 Confidence Intervals for the Mean (Small Samples)

6.2 Confidence Intervals for the Mean (Small Samples)

6.2 Confidence Intervals for the Mean (Small Samples). Statistics Mrs. Spitz Spring 2009. Objectives/Assignment. How to interpret the t-distribution and use a t-distribution table How to construct confidence intervals when n < 30 and ? is unknown Assignment: pp. 271-273 #1-26.

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Module 14: Confidence Intervals

Module 14: Confidence Intervals

Module 14: Confidence Intervals. This module explores the development and interpretation of confidence intervals, with a focus on confidence intervals for the population mean, based on the sample mean. Reviewed 05 May 05 / Module 14. Some Questions.

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Section 7-3: Confidence Intervals For the Mean

Section 7-3: Confidence Intervals For the Mean

Section 7-3: Confidence Intervals For the Mean. ? is unknown AND n < 30. In Section 7.2, we used the standard normal distribution (z-table) to find confidence intervals for the mean because:. 1) ? was known and normally distributed. or. 2) ? was unknown and n ? 30.

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Confidence Interval Estimation of Population Mean, ? , when ? is Unknown

Confidence Interval Estimation of Population Mean, ? , when ? is Unknown

Confidence Interval Estimation of Population Mean, ? , when ? is Unknown. Chapter 9 Section 2. The BIG Idea!.

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7.2 Confidence Intervals

7.2 Confidence Intervals

7.2 Confidence Intervals . When SD is unknown. The value of ? , when it is not known, must be estimated by using s , the standard deviation of the sample.

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