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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 1

An educator wants to see if there is a relationship between the number of absences for a student and the student’s final grade. Use the data below to find the least squares prediction line and to answer the questions 32 - 34:
Absences    10 12  2    0   8   5
Final Grade 70 65 96 94 75 82

Based on this line, what would the average grade be for a student who missed 6 days of class?

 

What does x = 0 represent?

 

What average grade does the model predict for students who have perfect attendance?

 

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