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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

7.5 Small-Sample Confidence Intervals for a Population Mean

I have kept track of my car’s fuel consumption over the past month.  I observed the mpgs for 17 trips from my home to FIU.  The average mpgs for the 17 trips was 31.1 mpg with a standard deviation of 2.1 mpg.  Form a 95% confidence interval for my true fuel consumption when driving to FIU.  To keep my gas budget in check, I need to average at least 30 miles per gallon.  Based on the interval you just created, should I slow down?

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