Final answer:
The statement is incorrect as it describes a different concept related to hearing threshold. Hearing threshold refers to the lowest sound level heard, not to frequency or percentage of times heard.
Step-by-step explanation:
The statement you provided appears to relate to a threshold of hearing, which is defined as the point at which a sound becomes audible to the average person. However, the description of the sound being heard 50% of the time is incorrect in this context. Instead, it describes the minimal audible field (MAF) or minimal audible pressure (MAP), not the general hearing threshold for a specific frequency.
This threshold represents the lowest sound pressure level that can be discerned by the ear at a particular frequency, and it is typically measured using an audiogram. The details in your additional information about how certain levels of hearing loss affect a person's ability to understand conversation provide useful context for understanding the impacts of hearing loss on daily life, particularly in the frequency and intensity region of conversational sounds, as shown in the referenced figure.