# Activity 1: Learn By Doing Category

“Learn By Doing” activities for our course materials.

## Learn by Doing – Statistical vs. Practical Significance

Published: Oct 22nd, 2013

The purpose of this activity is to give you guided practice exploring the effect of sample size on the significance of sample results, and help you get a better sense […]

## Learn by Doing – Interpreting Non-significant Results

Published: Oct 22nd, 2013

Suppose that only 40% of the U.S. public supported the general direction of the previous U.S. administration’s policies. To gauge whether the nationwide proportion, p, of support for the current administration is […]

## Learn by Doing – Z-Test for a Proportion

Published: Oct 22nd, 2013

The objective of this activity is to give you guided practice in carrying out the z-test for the population proportion (p). Background: This activity is based on the results of a […]

## Learn by Doing – Proportions (Step 4)

Published: Oct 22nd, 2013

The purpose of this activity is to give you a better sense of the p-value, and in particular, help strengthen your intuition about how it measures the evidence against the […]

## Learn by Doing – Proportions (Step 3) Understanding P-values

Published: Oct 22nd, 2013

Complete the following activities to test your understanding of p-values. In 2007, a Gallup poll estimated that 45% of U.S. adults rated their financial situation as “good.” We want to […]

## Learn by Doing – Proportions (Step 3)

Published: Oct 22nd, 2013

This document is linked from Proportions (Step 3).

## Learn by Doing: Proportions (Step 2) Verify Conditions

Published: Oct 22nd, 2013

In each of the following scenarios, you need to decide whether it is appropriate to use the z-test for the population proportion p, and if not, which condition is violated. […]

## Learn by Doing – Proportions (Step 2) Valid or Invalid Sampling?

Published: Oct 22nd, 2013

We are conducting a survey to determine if an upcoming bond measure will receive a majority vote in the county. The null hypothesis claims that p = 0.50, where p […]

## Learn by Doing – Proportions (Step 2) Understanding the Test Statistic

Published: Oct 22nd, 2013

Consider the population of part-time college students. Suppose that 60% of this population is female. Here is the sampling distribution for the proportion of females in random samples of n […]

## Learn by Doing – Hypothesis Tests and Confidence Intervals

Published: Mar 18th, 2013

The purpose of this activity is to give you hands-on practice in following up a test for the population proportion p in which Ho has been rejected with a confidence interval, and […]