The Width of a Confidence Interval Estimate for a Proportion

question 73

Multiple Choice

The width of a confidence interval estimate for a proportion will be

• A)narrower for 99% confidence than for 95% confidence.
• B)wider for a sample size of 100 than for a sample size of 50.
• C)narrower for 90% confidence than for 95% confidence.
• D)narrower when the sample proportion is 0.50 than when the sample proportion is 0.20.

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Definitions:

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.

Disposable Thermometer

A single-use instrument designed to measure body temperature without requiring sterilization between uses.