presriptive quiz answers 1-5
Which step of the problem-solving process is considered the most important?
Identify problem
If the allowable increase for a constraint is 100 and we add 110 units of the resource what happens to the objective function value?
It increases by an unknown amount.
Which of the following actions would expand the feasible region of an LP model?
Loosening the constraints.
Which type of spreadsheet cell represents the objective function in an LP model?
Objective cell
Solutions to which of the following categories of modeling techniques indicate a course of action to the decision maker?
Prescriptive models
For a minimization problem, if a decision variable's final value is 0, and its reduced cost is negative, which of the following is true?
The variable has a non-negativity constraint.
Which of the following are potential pitfalls of using a non-zero integer tolerance factor in the Analytic Solver Platform?
There is no assurance that the returned solution is optimal.
When do alternate optimal solutions occur in LP models?
When a binding constraint is parallel to a level curve
Which of the following is not a benefit of using binary variables?
With only 2 values, Solver can work faster.
If a company selects Project 1, then it must also select either Project 2 or Project 3. Which of the following constraints enforces this condition?
X1 − X2 − X3 ≤ 0
The best models
accurately reflect relevant characteristics of the real-world object or decision.
The slope of the level curve for the objective function value can be changed by
changing a coefficient in the objective function.
A greater than or equal to constraint can be expressed mathematically as
f(X1, X2, ..., Xn) ≥ b.
The specification or description of the relationship between the dependent and independent variables is generally called a constraint. declaration. function. mathematical model.
function
Linear programming problems have
linear objective functions and linear constraints.
All of the following are benefits of modeling except that
modeling finds the right answers to incorrect or flawed problem statements.
A set of values for the decision variables that satisfy all the constraints and yields the best objective function value is a(n)
optimal solution.
The reduced cost for a changing cell (decision variable) is
the per-unit profits minus the per-unit costs for that variable.
Numeric constants should be
placed in individual cells
How are binary variables specified in the Analytic Solver Platform (ASP)?
By specifying changing cells as BINARY in the Variable Type/Bound area of ASP
The constraints X1 ≥ 0 and X2 ≥ 0 are referred to as
nonnegativity conditions.
When the objective function can increase without ever contacting a constraint, the LP model is said to be
unbounded
Binding constraints have
zero slack.
A heuristic solution is
a rule-of-thumb for making decisions.
How are general integrality requirements indicated in the Analytic Solver Platform?
By specifying the INT option for the appropriate changing cells
