1. AP Process Test of Significance for Population Proportion

2. AP Process 1)State the type of significance test you will be conducting. 2)Check the requirements. State what they are, then check whether or not they are met. Also, mention what that means for your results.

3. AP Process (continued) 3)Write the hypotheses in both words and symbols. 4)Solve for the test statistic (showing formula, work and answer). 5)Calculate the p-value (showing probability statement and answer). 6)Interpret results. This statement should include the following: a)What is your test decision? b)Why did you decide that (compare to α)? c)What is your conclusion (in context)?

4. Sample Answer (BPS: 20.16) A test of significance for a population proportion. – Random sample from pop.? Not stated, assume random – H o : p =.5 The population proportion of victories by candidates with “better faces” is.5 H a : p >.5 The population proportion of victories by candidates with “better faces” is more than.5

5. Continued Because our p-value is less than 5%, we reject the null hypothesis. We have strong enough evidence to conclude that the population proportion of victories by candidates with “better faces” is more than.5.