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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

7.4 Finding Critical T Values

Finding the appropriate critical value ta/2. For the problems below, find the appropriate critical value given the sample size and confidence level.

·        For n = 29 and a confidence level of 98%
·        For n = 19 and a confidence interval of 80%
·        For n = 15 and a confidence interval of 99%
·        For n = 27 and a confidence interval of 90%

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