An Investigator Is Considering a Study for Assessing the Change

question 10

Multiple Choice

An investigator is considering a study for assessing the change in viral loads among those individuals who are on drug treatments versus those who are not. Two sample sizes were proposed (300 and 600) . If the investigator chooses the larger sample size, what will happen to the precision (width) of the interval estimate?

• A) Width remains the same because sample size is not related to the width of the interval.
• B) Width gets smaller because a larger sample reduces the margin of error.
• C) Width gets larger because with a larger sample there is more variability.
• D) None of the above.

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Definitions:

Long-Term Course

A strategy or plan that is intended to be implemented or unfold over an extended period.

Strategy

A plan of action designed to achieve a long-term or overall aim, typically involving the allocation of resources and decision-making processes.

Corporate Level

Relating to high-level strategic decisions made at the upper echelons of a business organization.

Top Management

The highest level of executives and decision-makers in an organization, responsible for determining its overarching strategy and policies.