A Population Has a Standard Deviation of 25

question 60

Multiple Choice

A population has a standard deviation of 25. A random sample of 125 items from this population is selected. The sample mean is determined to be 325. At 95% confidence, the margin of error is

• A) 2.24.
• B) 5.
• C) 4.38.
• D) 11.18.

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Definitions:

Positive Romberg Sign

A clinical indication of a loss of proprioception, where closing the eyes increases unsteadiness or falls, used in neurological examinations.

Ortolani Sign

A clinical sign used to detect dislocation of the hip in infants, involving a specific maneuver by a healthcare provider.

Modified Allen Test

A medical test used to evaluate the blood supply to the hand, ensuring the patency of the radial and ulnar arteries.

Snellen Test

A visual acuity test using a chart of letters or symbols at decreasing sizes to determine the clarity and sharpness of an individual's vision.