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(i) An Irish carpet company has a fixed leadtime for its products of 10 days. However, demand is variable. The company works 340 days per year and its annual demand for a popular brand is 10,200 metres. The standard deviation of daily demand is estimated to be 5 metres per day. The company would like its re-order point to be based on a ( 5 % ) stockout probability. Determine the re-order point (4 marks) Note: Relevant Formulae are available in the Formula Sheet (ii) The following set of seven jobs are to be processed through a two-step operation. Processing times for each work centre are shown in Table 4.2 Tahle 4 2. Proneccino timec hv winrl nentre Determine the optimal sequence for these jobs to be scheduled to minimize the total completion time for these jobs (3 marks)

(i) An Irish carpet company has a fixed leadtime for its products of 10 days. However, demand is variable. The company works 340 days per year and its annual demand for a popular brand is 10,200 metres. The standard deviation of daily demand is estimated to be 5 metres per day. The company would like its re-order point to be based on a $5%$ stockout probability. Determine the re-order point (4 marks) Note: Relevant Formulae are available in the Formula Sheet (ii) The following set of seven jobs are to be processed through a two-step operation. Processing times for each work centre are shown in Table 4.2 Table 4.2: Processing times bv work centre Determine the optimal sequence for these jobs to be scheduled to minimize the total completion time for these jobs (3 marks)

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