5. When a failure data set for spinel processed in a certain facility is analyzed, it is found that the characteristic strength is 327 MPa and the Weibull modulus is 8.75. A nominally identical batch...

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Extracted text: 5. When a failure data set for spinel processed in a certain facility is analyzed, it is found that the characteristic strength is 327 MPa and the Weibull modulus is 8.75. A nominally identical batch of material processed in a different facility is also tested and found to have essentially the same characteristic strength, but the Weibull modulus is 6.25. (a) At what stress level is the probability of failure equal to 50% for each set of material? (b) What initial conclusion might you draw about the quality control procedures at the two facilities