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To what extent do you agree or disagree with the following statements about the paper by Evans and Schwab?
(a) The paper demonstrates causation using the data: Catholic schools have an effect on student graduation rates, other things being equal.
(b) The paper assumes causation: Catholic schools have an effect on student graduation rates, other things being equal. The paper assumes a specific functional form to implement the idea of causation and other things being equal-the probit model. The paper uses the data to estimate the size of the Catholic school effect.
(c) The graduation equation tests for interactions among explanatory variables in the selection equation.
(d) The graduation equation assumes there are no interactions.
(e) The computer derives the bivariate probit model from the data.
(f) The computer is told to assume the bivariate probit model. What the computer derives from the data is estimates for parameters in the model.
In outer space a rock of mass 12 kg is acted on by a constant net force ‹ 30, ?14, 49 › N during a 3 s time interval. What was the rock's velocity at the beginning of the time interval
a small plastic sphere with a charge of -7.5 nc is near another small plastic sphere with a charge of 11 nc. if the
A defibrillator consists of a 15.3-µF capacitor that is charged to 8.4 kV. (a) If the capacitor is discharged in 1.0 ms, how much charge passes through the body tissues? (b) What is the average power delivered to the tissues?
A pendulum has a length of 0.67 meter. Determine how long would the pendulum have to be to double the period
A disk with radius R has uniform surface charge density. (a) By regarding the disk as a series of thin concentric rings, calculate the electric potential V at a point on the disk's axis a distance x from the center of the disk.
Estimate the terminal velocity for a dust particle in air. Assume it has a radius of 1.0 um and a density similar to that of balsa wood
The head of a hammer with a mass of 1.5kg is allowed to fall onto a nail from a height of 0.70m, What is the maximum amount of work it could do on the nail
A 300 kilogram crate is on a rough surface inclined at 30o. Obtain what is the work done by the weight
A pickup truck has a width of 78.3 in. what magnitude emf is induced between the driver and passenger sides of the truck
A block slides down an inclined plane, starting from rest and being pushed with a constant acceleration of 4.95 m/s2 over a distance of 18.2 cm. Find the total time the block is in motion
Two rockets A and B depart from Earth at steady speeds of 0.6c in opposite directions, having synchronized clocks with each other and with Earth at departure. After one year as measured in Earth's reference frame, rocket B emits a light signal. At..
You shoot an arrow into the air. Two seconds later arrow has gone straight upward to a height of 30 meters above its launch point. a) What was the arrow's initial speed? b) How long did it take for the arrow to first reach a height of 15 meters ab..
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