3. Permanis Sdn Bhd, a manufacturer in the Malaysian beverage industry, is committed to quality and customer satisfaction. During a specific observation period, the QA team recorded instances of defects while producing a total of 500,000 beverage units to analyse their patterns and frequencies, as shown in Table 2. Table 2/Jadual 2 Defect Type Jenis Kecacatan Improper Sealing Pengedap yang tidak betul Labelling Errors Ralat Pelabelan Damaged Containers Bekas Rosak Contamination Pencemaran Total Defective Units Jumlah Unit Rosak Number of Defective Units Bilangan Unit Rosak 150 120 80 50 400 (a) Calculate the overall probability of a unit being defective in the entire production batch and the probability of each specific type of defect occurring within the defective units. (10) (b) Based on the findings, create a checklist for a set of recommendations aimed at reducing the occurrence of defects. (10) (Total / Jumlah: 20)