Dr. Delmar wants to determine how loud a certain noise must be in order for it to be heard from a distance of 50 feet. Her question involves the concept of:
a. relative magnitude.
b. difference threshold.
c. absolute threshold.
d. just noticeable difference (jnd).
Answer c % correct 85 a= 15 b= 0 c= 85 d= 0 r = .73
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