Answer:
Quota sampling
Step-by-step explanation:
Quota sampling is one that is based on a reasercher's judgement. It involves use of a tailored sample that has a particular set of characterestics or traits. This is now taken as a representative of the population.
Quota sampling is a non probability sampling method.
In this scenario interview is done for owners of DVD players in a shopping mall such that they each interview 10 Sony owners, 8 Panasonic owners, 6 Toshiba owners, and 4 owners of other brands.
The characteristics for sampling is defined.