To study the mean blood pressure of all people in her state, Christine samples the population by dividing the residents by towns and randomly selecting 9 of the towns. She then collects data from all the residents in the selected towns. Which type of sampling is used?

cluster sampling

Step-by-step explanation:

Given : Christine samples the population by splitting the residents by towns and randomly selecting 9 of the towns.

Since she collects data from all the residents in the selected towns.

That means , towns are the clusters.

Hence, the type of sampling is used : "cluster sampling"

answer: -0.5 would be the most likley outcome

step-by-step explanation:

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