A EEEEE AT AaBbccI Aalbcd AaBbci Aabbcck AaB Aabb 1 Normal 1 No Spac... Heading 1 Heading 2 Title Subt Paragraph Styles 1. Suppose that a three-stage process had reliability ratings of 7, 8, and .8 at each station and that a failure at any station represented a failure for the entire process. 1) What is the reliability of the system? (8 points) 2) If each station is given a redundant check with .8 reliability, what is the new reliability of the system with redundant check? (10 points) 3) If we need to increase the reliability of the system, other than adding redundant checks indicated above, what else can we do? (10 points) 4) Without calculations, if we add only one redundant check that has a very low reliability, i.e. less than 20%, to the first stage. Please determine whether the following statement is correct or not, and why? (8 points) The newly added redundant part to the first stage will decreases the reliability of the system because of the very low reliability of the redundant part. LLLLLLLLLL 3. A repetitive manufacturing firm is planning on level material use. The following information has been collected. Currently, the firm operates 250 days per year. Annual demand (D) 20,000 Daily demand (d) Daily production (p) 250 Desired lot size (Q) Holding cost per unit per year (H) $50 1) What is the setup cost based on the desired lot size? (10 points) 80 2) What is the desired setup time based on $50 hour setup labor? (10 points) 3) Theoretically, if the setup time is short enough, is it possible for us to have a desired lot size as ONE unit order? Why? (8 points) Page 2 of 2 4 backspace