1. Chapter 9 Hypothesis Testing
9.4
Testing a Hypothesis about a Population Proportion

2. Hypothesis Test Regarding a Population Proportion, p
If a claim is made regarding the population proportion, we can use the following steps to test the claim, provided that
1. the sample is obtained via simple random sampling, and
2. npo(1 – po) > 10 with n < 0.05N (the sample size, n, is no more than 5% of the population size, N).

3. Step 1: A claim is made regarding the population proportion
Step 1: A claim is made regarding the population proportion. The claim is used to determine the null and alternative hypotheses. The hypotheses can be structured in one of three ways:

9. Step 4: Compare the critical value with the test statistic:

10. Step 5: State the conclusion.

11. EXAMPLE Trust the Media?

12. EXAMPLE. Hypothesis Test for a Population
EXAMPLE Hypothesis Test for a Population Proportion – Small Sample Size