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The Peace Corps is an independent U.S. government agency that provides trained volunteers for countries requesting assistance. According to Peacecorps.org, as of September 2012, volunteers currently serve in about 76 different host countries. The average age of a volunteer is about 28 years old. The following table reports the percentage of total volunteers serving by geographic region.
Region __________________ Percent of volunteers
Africa ........................................... 43%
Latin America .................................. 21%
Eastern Europe/Central Asia ................. 15%
Asia .............................................. 10%
Caribbean ....................................... 4%
North Africa/Middle East .................... 4%
Pacific Islands .................................. 3%
a. Use the table to design a procedure for obtaining a stratified sample (with proportional allocation) of 50 Peace Corps volunteers.
b. If stratified random sampling with proportional allocation is used to select the sample of 50 Peace Corps volunteers, how many would be selected from the Caribbean? |
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