Answer the following questions : In the following results, the reference sound is 15 dB. Legend: + = stronger; E = equal; - = less strong A = ascending series; D = descending series Intensite (dB) D 20 19.5 19 + 18.5 + + 18 + + + + 17.5 + E + + E\f12 11.5 11 10.5 10 1. From the table above, identify and explain the method used to determine the differential threshold. 2. Using the data from the table, determine the differential threshold and the point of subjective equality. Explain your approach. The following tables present the results of the signal detection theory in two individuals (A and B). Correct detection (DC); Non-detection (ND); False alarm (FA); Correct rejection (RC) Individual A:Stimulations Signal present No signal yes DC = 80 FA = 40 Answers No ND = 20 RC = 60 Individual B: Stimulations Signal present No signal yes DC = 65 FA = 20 Answers No ND = 35 RC = 80 1. Are individuals A and B biased? If so, what is the bias (positive or negative)? Explain how you got these results. 2. Which of the two individuals is more sensitive (better ability to detect the signal)? Explain your results