4. With the booming world economy. the 2x4 lumber consumed in the construction industry is considerably increasing. To obtain the 2s4's that meet the quality requirements the milling system for 2x4's needs to be effective. The following reliability diagram is established. What is the reliability of the milling system? perations Management, FARE*331I] Whiter 2021: Assignment 2 b] A system for milling has has four sensitive components connected in series with reliabilities of EH3, {1.94, {1.92 and {1.91. According to the Quality department of the lumber mill, the current system lacks reliability. At the manufacturing plant, the engineers have propost to improve the reliabilityr of the system. The new system still has four components, but the system has a backup for each component. The four backup components all have a reliability oft}.94. What is the reliability of the series [old]: system? \"that is the reliability of the neu.r {proposed} system? If you pay a premium. the manufacturer can improve all four of the backup units to {1.5}? {the third option). What is the reliability of the third option