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Chapter 7. Confidence Intervals

Chapter 7. Confidence Intervals

7.1 Introduction 160

7.2 Point Estimates of Mean and Standard Deviation 160

7.2.1 What Is a Point Estimate? 161

7.2.2 Parameters and Estimates 162

7.2.3 Standard Error of Estimate 164

7.3 Confidence Intervals for Mean and Standard Deviation 165

7.3.1 What Is a Confidence Interval? 166

7.3.2 (1-α)100% Confidence Level 167

7.4 Detail Example: Package Delivery Times of Herbal Teas 169

7.5 JMP Analysis of Herbal Tea Package Delivery Times 170

7.5.1 Confidence Intervals for Mean and Standard Deviation 171

7.6 Prediction and Tolerance Intervals 174

7.6.1 Prediction Intervals 174

7.6.2 Tolerance Intervals 178

7.7 Summary 180

7.8 Problems 181

7.9 References 183


  

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