## Day 93 - Lesson 9.2

##### Learning Targets
• State and check the Random, 10%, and Large Counts conditions for performing a significance test about a population proportion.

• Calculate the standardized test statistic and P-value for a test about a population proportion.

##### Activity:

This Activity is the formalization of the experience that students had in the Chapter 9 Intro. We are setting the stage for students to be able to produce a formal 4-step significance test.

##### Putting it All Together

The amazing part about this lesson is that students already have all of the pieces. They just need to put them together. Here is a list of all the pieces:

##### Interpreting the P-value using the picture

Be sure that students recognize that the Normal distribution in this activity is really just a model for the sampling distribution of a sample proportion (hopefully you saved your dotplot from the Chapter 9 Intro). Properly labeling and shading the Normal distribution leads directly to the interpretation of the P-value: