Reliability Exercise 2 A municipality has 4 emergency response teams with respective response reliabilities (i.e. probability or responding) of 90, 92, 94 and 96. In the event of an earthquake disaster, all 4 teams must respond. a)What is the overall reliability of response given an earthquake? b)The mayor has proposed a new plan to assign a backup team for each response team. If a response team cannot be reliably activated, the designated backup team would then respond. Each backup team has a response reliability of 90. What is the reliability of response with this new proposal? Failure Rate Exercise 1 A regional hospital system has 5 hospitals. Last month, one hospital remained on by-pass for 24 hours and another hospital remained on bypass for 48 hours. (Bypass means that the hospital was full and could not receive patients.) What is the availability of the hospital system? (Assume 30 days per month) Failure Rate Exercise 2 A medical equipment manufacturer subjected 100 heart pacemakers to 5,000 hours of testing. Halfway through the testing, 5 pacemakers failed. What was the failure rate in terms of the following: a) Percentage of failures b) Number of failures per unit-hour c) Number of failures per unit-year d) If 1,100 people receive pacemaker implants, how many units can we expect to fail during the following year