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English, 05.09.2019 23:30 kevinmarroquin6

In order to study the mean pulse rate of people in his town, jerry samples the population by dividing the residents by regions and randomly selecting 12 of the regions. he collects data from all residents in the selected regions. which type of sampling is used?

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In order to study the mean pulse rate of people in his town, jerry samples the population by dividin...
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