please help with questions 2,3&4

please show all workings

dir 47 needs of the healthcare industry. If this is done, many of the inventories, warehousing, distribution, and billing problems facing manufacturers go away. One call to a CLSC delivers all the materials needed for existing orders. A CLSC can consolidate deliveries, while improving receiving, restocking, and service to the hospital. Space previously used for inventory becomes flexible space for growth and revenue generation, while visibility across the manufacturing enterprise is greatly improved through a centralised inventory/warehouse/logistics provider. At the other end of the medical supply chain, hospitals also financially benefit from a centralised inventory centre . Supply chain management, inventory , and procurement can account for up to 35% of a hospitals operating budget, according to Healthcare Purchasing News. Unofficial VMI can account for up to 50% of total inventories, creating distribution, billing, and product lifecycle headaches for both manufacturers and hospitals. Hospital supply chains spend approximately $8 billion each year on inventory management and order management out of an estimated $11.5 billion in total supply chain costs. In this context, even small percentage improvements to supply chain efficiencies quickly add up! Recent studies show that - just in the past 2 years - hospitals that move to a Consigned Inventory Management System can expect to reduce supply costs by up to 3.5% within the first 4 years of operation, which equates to more than 1% of total hospital operating expenses. Accessed from http://www.medicaldevices.org/public/links/documents/InboundLogistics-HealthcareKnowledgeBase6- 07Final.pdf. QUESTION 1 (25) With reference to the article evaluate the major challenges facing inventory management departments in South African hospitals. Suggest ways in which these challenges should be overcome. (25) QUESTION 2 Sales of car covers for Sam's AutoCare store in Durban over a 12-month period are shown in the table below. The demand planner prepared a forecast using a combination of exponential smoothing and their collective judgement for a 4-month period. 132 Month Forecast Unit sales 84 96 112 July August September October November December 119 92 87 132 89 105 112 January February March April May 113 125 102 109 117 100 June (10) 2.1 Compute the MAD and MAPE for the demand planner's method. (15) You will need to calculate the MAD and MAPE for a nave forecast . 47 (25) QUESTION 3 Income at the accounting firm Dumisa and Associates for a 6-month period is shown in the table below. June March Month January 70 February 68.5 April 71.7 May 71.3 72.8 64.8 (Income in R thousand) Use trend-adjusted exponential smoothing to forecast the firm's July income. Assume that the initial forecast average for January is R 65,000 and the initial trend adjustment is 0. The smoothing constants selected are a = 0.1 and B = 0.2 (25) QUESTION 4 Using an appropriate diagram, to assess the different relationships in a manufacturing organisation