true or false. if false answer why

2. the difference of decision making under risk from decision making under certainty is referring to the situation in which the probabilities of ceetain decision outcomes occuring are known

3. a slack variable can be found only in the => type of constraint in LP model which usually represents the leftover amount of resources.

4. a surplurs variable which you can find only in the minimization problem of LP represents the diff between the function measuring how much of a requirement is met and the requirement

5. in the case of a tie in selecting the entering variable if there is a tie between a decision variable and a slack variable then a decision variable should be selected as the entering variable rather than a slack variable in order to reduce the number of simplex iterations

6. in the final optimal simplex tableu of maximization problem when one or more basic variable column has Cj - Zj of 0, it means a case of multiple optimal solutions

7. sensitivity analysis is a useful post-optimality analysis attempting to evaluate the sensitivity of optimal solution to several changes in the model's parameters simultaneouslya