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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
9.4 t-Test to Compare Two Population Means: Independent Samples (Equal Variances)
A study looked at the relationship between low birth weight and IQ. A random selection of 17 low birth weight had an average IQ of 95.5 points with a standard deviation of 16. A random selection of 19 normal birth weight children had an average IQ of 104.9 points with a standard deviation of 14.2. Use a 0.10 significance level to test the claim that the two groups of children have the same average IQ (assume equal variances).
STATS1
STATS2
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