[1]. The operational life of magnetic disks can be modeled by a Weibull distribu

Question

[1]. 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 (a) Using the estimated shape parameter = 0.53 and estimated scale parameter = 604, estimate the probability that a disk fails before 150 hours of use. (b) If a warranty is planned to cover no more 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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