Determining Sample Size

For the scenarios below:

Step 1: Estimate the target population size using secondary sources. Provide a rationale for how you determined each population size. Cite your sources.

Step 2: Use the sample calculator https://www.surveysystem.com/sscalc.htmto determine an appropriate sample size for each scenario. Use the market research standard for your confidence level. Use better than the market research standardfor your confidence interval. Adjust if your sample size is not realistically attainable.

Step 3: Report your sample size statement. Your statement should read: "For this study,the target population size is estimated to be _____.The sample will be _____.At the ______ confidence level, this study will have a margin of error of +/- ____%."

Scenario 1

A study calls for your research firm to survey a sample of Disneyland employees.

Scenario 2

A study calls for your research firm to survey a sample of American Indian residents in El Paso, Texas.

Scenario 3

A study calls for your research firm to survey a sample of those likely to purchase a tablet in the United States within the next year.