Suppose That the Distribution of Heart Rates for Medium-Sized Dogs

question 31

Multiple Choice

Suppose that the distribution of heart rates for medium-sized dogs is Normally distributed with mean 115 beats per minute and standard deviation 18 beats per minute.
Stacy takes her medium-sized dog, Scooter, to the veterinarian for a wellness check and learns that Scooter's heart rate is 126 beats per minute. Approximately what percentage of medium-sized dogs have a heart rate that is lower than Scooter's?

• A) -60%.
• B) 27.42%.
• C) 60%.
• D) 72.58%.
• E) 99.4%.

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Definitions:

Intravenous Pyelography

A radiographic imaging technique used to visualize the kidneys, ureters, and bladder by introducing a contrast medium intravenously.

KUB

An acronym for Kidney, Ureter, and Bladder, referring to an X-ray imaging technique focusing on these abdominal areas.

MRI

Magnetic Resonance Imaging; a medical imaging technique used to visualize internal structures of the body in detail, using magnetic fields and radio waves.

CT

Computerized Tomography, a medical imaging technique that combines multiple X-ray measurements taken from different angles to produce cross-sectional images of specific areas of a scanned object.