Laying fiber-optic cable is expensive. Cable companies want to make sure that if they extend their lines to less dense suburban or rural areas, there will be sufficient demand so the work will be cost-effective. They decide to conduct a survey to determine the proportion of households in a rural subdivision that would buy the service. They select a simple random sample of 5 blocks in the subdivision and survey each family that lives on one of those blocks.
a. What is the name for this kind of sampling method?
b. Give a possible reason why the cable company chose this method.

Respuesta :

Based on the information given, it can be deduced that the kind of sampling method that's used is cluster sampling.

Cluster sampling is a sampling method that divides a population into smaller groups that are known as clusters. It's usually used for large populations.

A possible reason why the cable company chose this form of sampling method is that it's cost and time-efficient.

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