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If you're allowed to sample pre-existing groups and exclude certain members from your pre-existing groups, and it is a form of nonprobability sampling, you are using:
Dry Cleaners
Businesses specializing in cleaning clothes and textiles using a chemical solvent rather than water, often for materials that cannot withstand the conventional laundering process.
Janitorial Services
Professional cleaning services provided to businesses, organizations, and residential buildings, including tasks like cleaning, trash removal, and maintenance.
Experience Properties
Characteristics of a product or service that can be assessed only through direct use or consumption.
Legal Services
Professional services offered by lawyers or legal practitioners to individuals or organizations, including legal advice, representation in court, and the preparation of legal documents.
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