With Reference to the Graph (Below)what Is the Selection Ratio

question 29

Multiple Choice

With reference to the graph (below) what is the selection ratio?

• A) 4/5 = 0.80
• B) 4/9 = 0.44
• C) 5/20 = 0.25
• D) 9/20 = 0.45

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Definitions:

Inner Ear

The part of the ear that contains organs responsible for hearing and balance.

Basilar Membrane

A structure in the cochlea that vibrates in response to sound waves, playing a key role in the process of hearing.

Oval Window

A membrane-covered opening at the base of the stapes bone in the middle ear that transmits sound vibrations to the inner ear.

Nerve Deafness

Hearing loss caused by damage to the inner ear or the auditory nerve pathways to the brain, also known as sensorineural hearing loss.