Which of the following is true of validation?
a. it estimates the real system.
b. it is largely a debugging task to make sure that no errors are in the computer procedure that implements the simulation.
c. the process of determining that a simulation model provides an accurate representation of a real system.
d. the process of determining that a computer program implements a simulation model as it is intended.

Which change is illustrated by the shift taking place on this graph? a decrease in supply an increase in supply o an increase in demand o a decrease in demand

When you hire an independent contractor you don't have to pay the contractors what

Stock a has a beta of 1.2 and a standard deviation of 20%. stock b has a beta of 0.8 and a standard deviation of 25%. portfolio p has $200,000 consisting of $100,000 invested in stock a and $100,000 in stock b. which of the following statements is correct? (assume that the stocks are in equilibrium.) (a) stock b has a higher required rate of return than stock a. (b) portfolio p has a standard deviation of 22.5%. (c) portfolio p has a beta equal to 1.0. (d) more information is needed to determine the portfolio's beta. (e) stock a's returns are less highly correlated with the returns on most other stocks than are b's returns.