Busıness Decısıon Models Final 5. Deneme Sınavı

Toplam 20 Soru
PAYLAŞ:

1.Soru

For this system of equations, how can basic solutions be determined?  


by setting two of the variables to -1 and solving the equations for the remaining two 

by setting only one  of the variables to zero and solving the equations for the remaining one 

by setting two  of the variables to zero and solving the equations for the remaining two 

by setting two  of the variables to 1 and solving the equations for the remaining two 

by setting two of the variables to 2 and solving the equations for the remaining two 


2.Soru

The simplex algorithm iteratively switches to the next ------- solution that is adjacent to the previous -------- solution until it reaches the optimum Z.

Which of the followings is complete the gaps in the sentence above?


Basic feasible

Bayesian rule

Corner point feasible

Decision tree

Complex feasible


3.Soru

What is a state called if it can only return to itself after a fixed number of transitions greater than 1?


Reducible

Irreducible

Absorbing

Periodic

Aperiodic


4.Soru

If two corner-point feasible solutions are connected by a line segment, what are they called?


compound 

adjacent

non-basic solution

basic solution 

basi feasible solution 


5.Soru

11 5   9⌉

15 7 10

What is the equilibrium pair of this matrix game ?


{2nd row, 2nd column}

{1st row, 3rd column}

{2nd row, 1st column}

{1st row, 1st column}

{2nd row, 3rd column}


6.Soru

In which state does Markov chain lock itself once it is in it? 


Recurrent state

Transient state

Aperiodic state

Absorbing state

Periodic state


7.Soru

  1. Identify the optimal solution by the coordinates of the zero-valued elements in the present matrix.
  2. If the number of masked out rows and columns is equal to n, then the optimum can be obtained from the present matrix; move on to the next step. If not, skip to Step 6.
  3. Identify the smallest value of each row for the cost matrix of the assignment problem. Subtract each row’s smallest value from all the costs in the respective row.
  4. Identify the smallest value except for the ones in masked out rows and columns. This value is then subtracted from the values of unmasked rows and columns and, added to the intersections of masked out rows and columns. Return to Step 3.
  5. Identify the smallest value of each column for this altered matrix. Subtract each column’s smallest value from all the costs in the respective column.
  6. Mask the columns and rows out that have a zero value. The number of masked out rows and columns must be at a minimum.

Considering the items above, which of the followings does include the right phases of the Hungarian Method?


I-II-III-IV-V-VI

I-III-IV-II-V-VI

II-I-VI-III-IV-V

III-V-VI-II-I-IV

V-II-III-VI-IV-I


8.Soru

Which term completes the blank in the following sentence best? The ..................... pij(n) is the probability that a process in state j will be in state i after n additional transitions.


n-step transition probability

Sum of probabilities

Matrix multiplication

Transition probability matrix

Stochastic process


9.Soru

In transportation models, the total supply equals the total demand. Some transportation problems may be less restrictive; the total supply may exceed aggregate demand. In such a case, what should it be done for balancing of the model?


A dummy destination must be defined.

One of the destination which has the highest cost must be removed.

The nearest solution should be accepted.

The solution must be obtained instinctively.

One of the destination which has the lowest cost must be removed.


10.Soru

Which step below is not for solving m×2 games?


Draw two vertical axes one unit apart. These two lines are 0 and 1.

Take the probabilities of the two alternatives of the column player as q and (1-q), then expected pay-offs of row player for each strategy are expressed with equations.

Draw n straight lines for j=1, 2… n and determine the lowest point of the upper envelope obtained. This will be the minimax point.

Draw n straight lines for j=1, 2… n and determine the highest point of the lower envelope obtained. This will be the maximin point.

The two or more lines passing through the minimax point determines the reduced 2 x 2 payoff matrix.


11.Soru

In the simplex algorithm, what should we do if the basic feasible solution is optimal?


We should reform the mathematical model.

We should converse the equations to the proper form for checking for the optimality.

If the solution is optimal, then we stop the process.

We should choose the leaving variable.

We should choose the entering variable.


12.Soru

If the value of a game is zero what is it called as?


Saddle point

Fair game

Unfair game

Pay-off

Pay-off Matrix


13.Soru

Some of the most important applications of Markov chains involve an important class of Markov chains which is called an absorbing chain. A state i of a Markov chain is called an absorbing state if, once the Markov chain enters the state, it locks in there forever.

According to the matrix, which of the state is an absorbing state?


I

II

III

IV

V


14.Soru

Which one below can not be given as an example for stochastic processes?


Radar measurements for the position of an airplane

Daily prices of a stock or exchange rate fluctuations

Toss a coin

Medical data such as a patient’s blood pressure or EKG

The time of Tv shows


15.Soru

How can the optimality of a basic feasible solution for the transportation model be tested?


by checking the feasibility of basic solution

by checking the feasibility of the dual solution

by checking the optimality of the basic solution

by checking the optimality of the dual solution

by minimizing the total transportation costs


16.Soru

  1. List all possible decision alternatives
  2. Define decision problem
  3. Establish objectives
  4. Select the most appropriate decision making method and apply this method
  5. Identify the possible outcomes for each decision alternative
  6. Determine the best alternative and make your decision
  7. Identify the pay-off matrix for each combination of alternatives and events

What is the correct order of the steps of decision making process above?


2-3-1-5-7-4-6

2-1-3-4-7-5-6

2-3-4-6-5-1-6

3-2-1-4-7-5-6

3-1-2-5-4-7-6


17.Soru

Which method considers the respective costs of the variables so as to find a basic feasible solution that approximates the optimum solution more and begins with selecting the route that has the smallest unit cost of transportation?


Dual Model

Northwest Corner Method

Least-Cost Method

Vogel's Approximation Model

The Hungarian Method


18.Soru

What are the probabilities of going from ones state to another called?


Transition probabilities

Discrete-state process

Continuous parameter

Continuous-state process

Stochastic process


19.Soru

A basic solution is a .... of the solution space.

Which one is appropriate for the blank ?


surface

curve

middle point

corner point

line


20.Soru

Max Z = 2x1 + 6x2 + 5x3 + 0s1 + 0s2 is the objective function of a linear program. The initial basic feasible solution for this program is (0, 0, 0, 40, 20). Which of the following is the first variable that enters to basic variables?


s1

s2

x1

x2

x3