Hearing loss study. Patients with normal hearing in one ear and unaided sensorineural hearing loss in the other are characterized as suffering from unilateral hearing loss. In a study reported in the American Journal of Audiology(March 1995), eight patients with unilateral hearing loss were fitted with a special wireless hearing aid in the “bad” ear. The absolute sound pressure level (SPL) was then measured near the eardrum of the ear when noise was produced at a frequency of 500 hertz. The SPLs of the eight patients, recorded in decibels, are as follows:
SOUND
73.0 | 80.1 | 82.8 | 76.8 | 73.5 | 74.3 | 76.0 | 68.1 |
Construct and interpret a.90% confidence interval for the true mean SPL of patients with unilateral hearing loss when noise is produced at a frequency of 500 hertz.
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