Solve the following Problem Data Envelopment Problem, is store efficient? if the answer is NO, what is the z value? hint: find the maximum z value * OUTPUT STORE LOCATION 1 A 2 B 3 4 D INPUT EBITDA STORE ARE(SQ.FT) #EMPLOYEES 7,459,291 35,523 62 3,880,099 39,493 75 4,215,221 39,731 79 4,201,924 35,833 77 5,182,632 36,552 75 3,079,086 37,328 61 6,485,312 38,709 79 1,820,738 37,827 66 6,310,682 35,631 66 125,696 39,508 63 5 SALES 47,682,116 42,612,114 44,187,228 30,487,610 41,535,542 24,497,561 43,749,818 24,081,113 44,711,757 32,138,829 E 6 F 7 G 8 H 9 K L 10 EBITDA stands for Earnings Before Interest, Taxes, Depreciation, and Amortization and is a metric used to evaluate a company's operating performance. It can be seen as a proxy for cash flow. In finance, the term is used to describe the amount of cash (currency) that is generated or consumed in a given time period. G is not efficient, the z value is between [.81, 85) O O O G is not efficient, the z value is between [.69, 71) G is not efficient, the z value is between [.59,61) G is not efficient, the z value is between [.49,51) G is not efficient, the z value is between [.91, 95) G is efficient, the z value is equal to 1 Store A, B, C are efficient x1+x2