Question: Exercise 4B3: Failure Rate Analysis Problem Set 3. Calculate solutions to each of the following problems. Show proper formula setups, calculations, and units of measure

Exercise 4B3: Failure Rate Analysis Problem Set

Exercise 4B3: Failure Rate Analysis Problem Set 3. Calculate solutions to each of the following problems. Show proper formula setups, calculations, and units of measure as appropriate! Truncate all calculations at a maximum of 4 decimal places. Problem 1. Before Best Buy will purchase a TV model for sale in its stores, the manufacturer must send Best Buy a batch of 20 identical TVs for testing. Best Buy then puts the TVs through an 80 hour, continuous test to determine the failure rate of the TV model. During a recent test for a new RCA TV, three TVs failed at 15, 57, and 79 hours. A. What is the failure rate for the new RCA TV Model? (2 Points) B. Assume MTBF = 1/1, what is the mean time between failures? (1 Point) Problem 2: Ball State University (BSU) is evaluating four different internet service providers (ISPs) and will select one to provide service to/from campus. Given the mean time between failure and time to repair data in the table below, calculate the system availability (uptime %) for each ISP. Assuming the cost of each is approximately the same. Which ISP has the best uptime performance? (2 Points) ISP Spectrum AT&T Metronet Muncie Bell ISP Performance Data MTBF (Hours) MTTR (Hours) 75 3 90 2 120 6 200 6

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