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A statewide sample survey is to be conducted. First,the state is subdivided into counties. Seven counties are selected at random,and further sampling is concentrated on these seven counties. What type of sampling is this?
Overdose
The ingestion or administration of a substance in a quantity significantly higher than recommended or generally practiced, often resulting in a toxic reaction or death.
Advertising Companies
Businesses specializing in creating, planning, and handling advertisements and sometimes other forms of promotion.
Manufacturers
Entities or individuals that create or produce goods and products on a large scale using machinery and labor in various industries.
Illness
A state of health in which a person suffers from a disease or ailment, affecting their normal physiological function.
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