Chapter 8 Hypothesis Tests
The idea of a hypothesis test
Test for ì using z
Test for ì using t
Test for p
Test and confidence interval for ó and ó and the chi-square distribution
The theory of a hypothesis test (type I and type II errors)
STEPS IN HYPOTHESIS TESTING
1. State Ho, the null hypothesis, using the appropriate parameter.
2. State Ha, the alternative hypothesis. This is what you want to prove. Use the same
parameter and express this with an inequality.
3. Before seeing your sample choose an alpha level. This is the level of significance
for the test. It