Assignment:
You receive a request from a team of product engineers who are working on the design of a projector that your company manufactures. You are asked to quantify the life characteristics of the projector bulb in order to understand its reliability. You are given a data set for 10 bulbs that were all tested to failure by the bulb's supplier. The test included shutdown and cool down periods that were said to simulate normal use conditions. The failure times were 513, 649, 740, 814, 880, 944, 1009, 1078, 1161 and 1282 hours.
1. Estimate the mean life of the bulbs.
2. Estimate the B10 life of the bulbs.
3. Estimate the reliability of the bulbs after 200 hours of operation.
4. Assuming 1,000 bulbs will be fielded, estimate how many would fail after 200 hours.
5. Estimate the warranty time for the bulb if you do not want failures during the warranty period to exceed 2%.