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1: "Range of optimality" describes the impact of simultaneous changes in objective function values and right-hand-side values. T/F? 2: If a general linear programming problem can also be formulated as a network problem, the network formulation is generally preferable because of easier model input and a quicker solution technique. T/F? 3: The complementary slackness principle states that either there is zero slack on a constraint or the reduced cost is zero. T/F? 4:An optimal solution must have no slack on at least one constraint. T/F? 5:The objective function of a transportation model is to minimize the total shipping costs. T/F? 6:A map of the United States can be drawn as a network with each state represented by a node and arcs connecting each pair of states that share a boundary. T/F? 7:It takes two pounds of steel and three pounds of copper to make a particular product. If there are 100 pounds of steel and 100 pounds of cooper available, one constraint will be 2X1 + 3X2 ≤ 200. T/F? 8:The objective function coefficient for X1 is currently $18 and for X2 is $29, and the ranges of optimality for these coefficients are between $15 and $20 and between $25 and $35, respectively. If the objective function coefficients for X1 and X2 simultaneously decline by $2 each, since both coefficients are still within their ranges of optimality, the optimal solution is guaranteed to remain the same. T/F?
measures of central tendency and dispersion with spssthe statistics for this week become the basis for several other
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