A Researcher Has Already Written a Study Proposal and Performed

question 30

Multiple Choice

A researcher has already written a study proposal and performed a power analysis, which indicates that the sample size will have to be at least 36, in order to avoid Type II error. The researcher then decides to set the level of significance at p < 0.01 rather than p < 0.05 but wants to maintain power at 0.80. What will the researcher have to do in order to maintain sufficient power?

• A)Increase the effect size.
• B)Set beta at 0.60.
• C)Use a different statistical test.
• D)Increase the sample size.

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Definitions:

Dizzy Spells

Temporary episodes of dizziness or lightheadedness that can result from a variety of causes, including dehydration, blood pressure fluctuations, or inner ear problems.

Capillary Refill Time

The time taken for color to return to an external capillary bed after pressure is applied, used as a quick test to assess circulatory status.

Pupil Reactivity

The change in pupil size in response to light, which is a critical measure in assessing neurological function.

Oral Thermometer

An instrument used to measure body temperature through the mouth.