Chapter 11 : Two-sample Tests of Hypothesis

Chapter 11 : Two-sample Tests of Hypothesis

1. Comparing Two Population Means

   • No assumptions about the shape of the populations are required
   • The samples are from independent populations
   • The formula for computing the test statistic (z)

2. Two-Sample Tests about Proportions

3. Comparing Population Means with Unknown Population Standard Deviations (the Pooled t-test)

   • Both populations must follow the normal distribution.
   • The populations must have equal standard deviations.
   • The samples are from independent populations.

4. Dependent Samples

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