(a) A time series model is simulated with 1000 samples. The figures follow show the sample ACF and sample PACF. 10 Lag Lag Figure 2.1: Sample ACF and sample PACF Write the model with backward shift operator 02 05 10 Parial ACF €3
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- 4. What is the optimized Z value for this following LP problem? Minimize Z= 3x + 10y, subject to (1) 2x + 4y ≤ 12 and (2) 5x + 2y ≥ 10 and (3) x, y ≥ 0. Answer: ______________INCORRECT FORFormulate a linear programming model that can be used to determine the pounds of Brazilian Natural and Colombian Mild that will maximize the total contribution to profit. (Let BR = pounds of Brazilian beans purchased to produce Regular, BD = pounds of Brazilian beans purchased to produce DeCaf, CR = pounds of Colombian beans purchased to produce Regular, and CD = pounds of Colombian beans purchased to produce DeCaf.) Max 2.033BR+2.582BD+1.868CR+2.418CD INCORRECT Pounds of Regular BR+CR≤900 INCORRECT Pounds of DeCaf BD+CD≤400 INCORRECTFor the products A, B, C, and D, which of the following could be a linear programming objective function? Select one: a. Z = 1A + 2BC + 3D b. Z = 1A + 2AB + 3ABC + 4ABCD c. Z = 1A + 2B + 3C + 4D d. Z = 1A + 2B/C + 3D
- Suppose that the number of ounces of soda put into aPepsi can is normally distributed, with m 12.05 oz ands .03 oz.a Legally, a can must contain at least 12 oz of soda.What fraction of cans will contain at least 12 oz of soda?b What fraction of cans will contain under 11.9 oz ofsoda?c What fraction of cans will contain between 12 and12.08 oz of soda?d 1% of all cans will contain more than oz.e 10% of all cans will contain less than oz.f Pepsi controls the mean content in a can by setting atimer. For what mean should the timer be set so that only1 in 1,000 cans will be underfilled?3. The manager of a manufacturing company is trying to figure out how many products need to be produced for the coming quarter. Suppose the beginning inventory of the quarter is 500 units and the management predicts that the sales volume in the coming quarter would be 2400 units. The company also requires 1100 units ending inventory for the coming quarter. What should be the production volume for that quarter? a. 2400 b. 3000 c. 3300 d. 3900The Silly Nut Company makes two mixtures of nuts: Mixture A and Mixture B. A pound of Mixture A contains 12 oz of peanuts, 3 oz of almonds and 1 oz of cashews and sells for $4. A pound of Mixture B contains 12 oz of peanuts, 2 oz of almonds and 2 oz of cashews and sells for $5. The company has 1080 lb. of peanuts, 240 lb. of almonds, 160 lb. of cashews. How many pounds of each of mixtures A and B should the company make to maximize profit? (Hint: Use consistent units. Work the entire problem in pounds by converting all values given in ounces into fractions of pounds).
- Which of the following is the optimal value of the objective function for the LP model in this problem? Minimize z=4x + 8y Subject to: x+1.6y>=45 2x+0.5y>=40 X+y<=40 XY>=0 a.220 b.160 c.240 d.200Consider the following problem: Maximize z = 2x1 + 2x2 + 4x3 subject to: 2x1 + x2 + x3 <= 2 3x1 + 4x2 + 2x3 >= 8 x1, x2, x3 >= 0 (a) Show that Phase I will terminate with an artificial basic variable at zero level (you may use TORA for convenience). (b) Remove the zero artificial variable prior to the start of Phase II, then carry out Phase II iterations.Use the simplex method to maximize the given function. Assume all variables are nonnegative.Maximize f = 3x + 22y subject to 14x + 7y ≤ 35 5x + 5y ≤ 50 (x,y)= f=
- Dataware is trying to determine whether to give a $10 rebate, cut the price $6, or have no price change on a software product. Currently, 40,000 units of the product are sold each week for $45 apiece. The variable cost of the product is $5. The most likely case appears to be that a $10 rebate will increase sales 30%, and half of all people will claim the rebate. For the price cut, the most likely case is that sales will increase 20%.a. Given all other assumptions, what increase in sales from the rebate would make the rebate and price cut equally desirable?b. Dataware does not really know the increase in sales that will result from a rebate or price cut. However, the company is sure that the rebate will increase sales by between 15% and 40% and that the price cut will increase sales by between 10% and 30%. Perform a sensitivity analysis (two-way data table) that could be used to help determine Dataware’s best decision.The LP relationships that follow were formulated by Richard Martin at the Long Beach Chemical Company. Maximize 4X1+12X1X2+5X3 Subject to: 2X1X2+2X3≤70 (C1) 10.9X1−4X2≥15.6 (C2) 10X1+3X2+3X3≥21 (C3) 16X2−13X3=17 (C4) −4X1−X2+4X3=5 (C5) 7X1+2X2+3X3≤80 (C6) For an LP, the objective function developed by Richard is (valid or onvalid) . Constraint C1 is a(n) (valid or onvalid) LP constraint. Constraint C2 is a(n) (valid or onvalid) LP constraint. Constraint C3 is a(n) (valid or onvalid) LP constraint. Constraint C4 is a(n) (valid or onvalid) LP constraint. Constraint C5 is a(n) (valid or onvalid) LP constraint. Constraint C6 is a(n) (valid or onvalid) LP constraint.Minimization function is Z=8x1+12x2Subject to: 5x1+2x2≥204x1+3x2≥24X2≥2