The operational life of magnetic disks can be modeled by a Weibull distribution.

Question

The operational life of magnetic disks can be modeled by a Weibull distribution. Consider the following data that represent the life of packaged magnetic disks exposed to corrosive gases (in hours): 4. 86. 335. 746. 80. 1510. 195. 562. 137 1574. 7600. 4394. 4. 98. 1196. 15. 934. 11 Using the estimated shape parameter = 0.53 and estimated scale parameter = 604. estimate the probability that a disk fails before 150 hours of use. If a warranty is planned to cover no mere than 10% of the manufactured disks, at what value should the warranty level be set?

Explanation / Answer

probability of a. 0.79 b. .25

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