Reference no: EM13290242
Recently, the British Air Force studied the ability of pilots to detect warning signals in a jet fighter cockpit under emergency situations. Two test were conducted: one with normal conditions and the other under simulated emergency conditions. During each test, the pilots were presented with 120 warning signals out of 250 total trials; if they believed that they had detected the signal, they were to press a button. On average with normal conditions, the pilots pressed the button 140 times, but failed to press the button in 12 trials during which the signal was actually presented. Under the simulated emergency conditions, the pilots refrained from pressing the button 115 times, but pressed the button 55 times when no signal had been presented.
a. for each test, draw a signal detection matrix and fill in the appropriate probabilities for the four possible outcomes.
b. Assuming the resulting noise and signal distributions are of equal size and shape. In each test what type of response strategy (conservative or risky) do the pilots appear to be using? And Why?
c. Assume equal costs and benefits for the outcomes of this signal detection experiment. What is the optimal beta? What type of strategy does this value suggest that the pilots use?
d. Determine d’ for each test.
e. Explain the difference between the response criterion of the pilots and the sensitivity of the pilots to the signal.
|
Compute the mass (in g) of nh4cl(s) required to change
: The heat of solution of ammonium chloride (NH4Cl(s)) in water is +14.7 kJ/mol. Calculate the mass (in g) of NH4Cl(s) required to change the temperature of (1.2550x10^2) ml of water from (2.440x10^1) °C to (5.30x10^0) °C.
|
|
What is the capacitance of the device
: Paper has a dielectric constant of 3.5 and a dielectric strength of 16 kV/mm. What is the capacitance of the device
|
|
Sketch basic characteristics of an-channel j-fet
: Sketch basic characteristics of an-channel J-FET (ID vs. VDS andID vs. VGS) and explain why it may be used asa constant current source and a voltage controlled resistor.Indicate the parts of the characteristics where these functions canbe realized..
|
|
What is abc optimal capital budget
: Any debt over $2 million will carry a 12 percent coupon rate and be sold at par. If ABC has a marginal tax rate of 40 percent, in which projects should it invest and what is ABC's optimal capital budget?
|
|
Under the simulated emergency conditions
: Recently, the British Air Force studied the ability of pilots to detect warning signals in a jet fighter cockpit under emergency situations. Two test were conducted: one with normal conditions and the other under simulated emergency conditions. Durin..
|
|
How much time is required for the car to pass the truck
: The driver of a car wishes to pass a truck that is traveling at a constant speed of 19.3 m/s . Initially, the car is also traveling at a speed 19.3m/s, How much time is required for the car to pass the truck
|
|
Explain metal chloride solution (mcl2(aq))
: In a constant pressure calorimeter, (1.4250x10^2) mL of a 1.00 M metal chloride solution (MCl2(aq)) were added to (1.4250x10^2) mL of a 0.500 M potassium sulfate solution.
|
|
Determine what is the signal level expressed in volts rms
: A double-balanced modulator is rated to accept signals up to+7dBm. What is the signal level expressed in: (a) watts, (b) volts rms Assume that all impedances are 50Ω and are matched.
|
|
What is the new price necessary
: Thus, total volume is unchanged at 1,000 visits. What is the new price necessary assuming all other factors are unchanged?
|