Calculate the criticality of a subsystem which fails once in every 5 trials in a year and if the likelihood of the worst case occurrence will happen is once in every two trials and if it has a severity of 4 (very high).
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- CASE STUDY You have been assigned the task of making a preliminary recommendation for the material to be used in the bumper of a new ultra-safe crash-resistant automobile. It is particularly important that the bumper be able to survive the energy levels associated with low-velocity crashes, without damage to the bumper of the automobile. Even more important, for high energy levels associated with severe crashes, the bumper should be capable of deforming plastically over large displacements without rupture, thereby dissipating crash pulse energy to protect the vehicle occupants. It is anticipated that these new vehicles will be used throughout North America, and during all seasons of the year. A 10-year design life is desired. Cost is also an especially important factor. Propose one or a few candidate materials suitable for this application. (Specific alloys need not be designated).Select one scientist of the famous quality contributors and, in a minimum of 500 words, brieflydescribe his major contributions to quality management. Choose one of his contributions to solve aquality problem of your choice.Chart and Regression analysis : What does the intercept predict? X: C16 (number of cars on the sales lot) versus Y: C17 (cars sold per day) Equation: y=2.9x + 14.5 Slope:2.9 Intercept:14.5 Does the intercept mean the intercept is 14.5 means that the cars sold per day( Y) predicted number of cars on sale lot(X) to be 14.5, but this intercept has no meaning. So, I will not use to predict cars sold per day?
- a factory that produces a small number of items per day. In about 30% of working days the factory produces 7 units of the product, in 45% of working days it produces 8 units, and the rest of working days it produces 9 units. After production is completed, each unit is thoroughly inspected. Each unit fails inspection with probability ??. If two or more units fail inspection on the same day, the factory closes for a week to re-calibrate equipment. Say the factory opens today after being closed for a week, write a mathematical expression to calculate the probability that the factory will remain open at least 30 days before closing again.Cost-of-quality theories are established by four scholars. The two of them are Crosby and Juran, and they each have different theories, which are: Group of answer choices zero defects and fitness for use fitness for use and zero defects cost of quality and zero defects grades of quality and fitness for useFEMA was performed for a seat belt installation process at an automobile assembly plant. Th efollowing three failures modes were identified: (1) Select wrong color seat belt(2) Seat belt bolt were not fully tightened, and (3) Trim cover clip misaligned. The six sigma team rated each of the failure modes for its severity, probability, of occurrence and probability of detection and Severity ratings are 5,9,2, respectively; probabilty of occurence was 4,2,3, respectively; and probability of detection was 3,8,4 respectively. Which of the failure modes should recieve the highest priority for process improvement?
- A returned product that has been involved in a fire has become available for analysis as part of a product recall investigation. Name some of the non-destructive and destructive techniques that could be used in an effort to determine the most likely root cause.Medication Error You are a physician making rounds on your patients when you arrive at Mrs. Buckman’s room. She’s an elderly lady in her late 70s who recently had colon surgery. She is also the wife of a prominent physician at the hospital. She has been known to be somewhat confrontational with the nursing staff. However, today she states she was just given a shot of insulin to cover her elevated blood sugar and the amount of insulin did not seem to be the usual amount. Even though Mrs. Buckman often complains, you are somewhat concerned about this observation and decide that it would be best to check on this. You ask the charge nurse to review the dose of insulin given. She, in turn, finds Mrs. Buckman’s nurse, who states that, as ordered, she had given the patient 80 units of insulin. You immediately become quite alarmed, as this is an extraordinarily large dosage. You make sure that the patient is given a large amount of glucose supplement and that her blood sugar is monitored every…SCENARIO A: A woodcutting operation has a target (nominal) value of 200 inches and consistently averages 200.1 inches with a standard deviation of .05 inches. The design engineers have established an upper specification limit of 200.25 and a lower specification limit of 199.75 inches. The process capability ratio, Cp, of the operation is: Group of answer choices a Less than 1 b Greater than or equal to 1 but less than 1.25 c Greater than or equal to 1.25 but less than 1.5 d Greater than or equal to 1.5 but less than 1.75 e Greater than or equal to 1.75 but less than 2 f Greater than or equal to 2
- As the supervisor in charge of shipping and receiving, you need to determine the average outgoing quality in a plant where the known incoming lots from your assembly line have an average defective rate of 4.0%. Your plan is to sample 80 units of every 1,000 in a lo number of defects in a sample is not to exceed 3. Such a plan provides you with a probability of acceptance of each lot of 0.79 (79%). The average outgoing quality for the plant is =% (enter your response as a percentage rounded to two decimal places).An expensive piece of equipment is used in the masking operation for semiconductor manufacture.A capacitor in the equipment fails randomly. The capacitor costs $7.50, but if it burns out while the machine is in use, the production process must be halted. Here the replacement cost is estimated to be $150. Based on past experience, the lifetime distribution of the capacitor is estimated to be Number of Months Probability of of Service Failure 1 .08 2 .12 3 .16 4 .26 5 .22 6…Reliability prediction is a design-assist process by which the reliability characteristics of a system are obtained, by calculating the anticipated system RAMS (Reliability, Availability, Maintainability and Safety-Integrity) from assumed component failure rates. Discuss the importance of reliability prediction and the factors that affect the reliability performance of electronics components.