Use the Given Information to Find the Minimum Sample Size $\mu$

question 18

Multiple Choice

Use the given information to find the minimum sample size required to estimate an unknown population mean $\mu$
-How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? We want 90% confidence that the sample mean is within 4 minutes of the population mean, and the population
Standard deviation is known to be 12 minutes.

• A) 60
• B) 25
• C) 35
• D) 49

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Definitions:

Plane of Section

A specific direction through a body or structure to expose a surface for study.

Sagittal

Pertaining to a plane that divides the body into right and left portions.

Internal Structures

The organs, bones, and other bodily elements that exist within the body and contribute to its complex functionality.

Glomerular Capsule

A cup-like sac at the beginning of the tubular component of a nephron in the kidney that performs the first step in the filtration of blood to form urine.