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Course Documents

Chapter 1 - Intro

Chapter 2 - Methods for Describing Sets of Data

Chapter 3 - Probability

Chapter 4 - Discrete Random Variables

Chapter 5 - Normal Random Variables

Chapter 6 - Sampling Distributions

Chapter 7 - Confidence Intervals

Chapter 8 - Tests of Hypothesis: One Sample

Chapter 9 - Confidence Intervals and Hypothesis Tests: Two Samples

Sample Exam I: Chapters 1 & 2

Sample Exam II: Chapters 3 & 4

Sample Exam III: Chapters 5 & 6

Sample Exam IV: Chapters 7 & 8

Problem 3

11.8 Using the Model to Create an Estimation Interval

The least squares line for the relationship between the number of pounds overweight and the age at death from problem 56 was y-hat = -0.538X +63.085. Find the 90% confidence interval for an average woman’s age at death given that the woman was 20 pounds overweight (n = 20, x-bar = 8.9, SSxx =2933.8, S = 5.3753).
 

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