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 A research group is interested in gauging perceptions about health 
club memberships.​Specifically, they wish to determine the percentage of monthly paying
members in the United States that believe health memberships are too expensive. 
They use an alphabetized list of members of the health  club located nearby 
and use technology to generate a randomly shuffled list of the members

They then select members to contact from this list until they have succeeded in contacting 225 members. 
 Determine the population of the above problem

The population is the entire group of individuals or instances about whom the research group hopes to learn. The population of interest here is  The  monthly  paying members in the United States

The sampling frame?

The sampling frame is a list of individuals from which the sample is drawn. Individuals in the population of interest but who are not in the sampling frame cannot be included in any sample

The member listing from the health club located  nearby

The population parameter of interest?

Percentage is the parameter of interest here, 

The proportion who believe health club memberships are not too expensive. 

sampling process: Notice how each element in the population has an equal chance of selection since the population is being randomly shuffled and then the elements are being selected.

Therefore, this is a simple random sampling process. 

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