Lance,an advertising researcher,is selecting potential survey participants from a list of all the people who have ordered HMR dietary products by mail since January 2012.The respondents will be sent a collection of ads and asked to select the ad that is most relevant to their health needs.Since every person in the target population has an equal and known likelihood of being picked,the group he selects will be a

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Lance is selecting participants using a list of all the people who have ordered HMR dietary products by mail since January 2012, which means he is using a sampling frame. He is also ensuring that each person in the target population has an equal and known likelihood of being picked, which is the definition of probability sampling. Therefore, the group he selects will be a probability sample.

Lance,an Advertising Researcher,is Selecting Potential Survey Participants from a List