1. Ten fatigue specimens are tested to failure. The failure times in hours are given below. Failure Time to Failure Median Rank Order (Hours) 1 85 2 135 3 150 4 150 5 190 6 200 7 210 8 240 9 240 10 250 Calculate the median rank. Plot the Weibull distribution line on probability paper. What is the slope and what class of failure mode it is? What is the characteristic life? What is the B10 life? What percent of the samples are expected to fail before 200 hours? What is the reliability at 300 hours? O Also compare your results with Minitab output.

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1. Ten fatigue specimens are tested to failure. The failure times in hours are given below.
Failure
Time to Failure
Median Rank
Order
(Hours)
1
85
2
135
3
150
4
150
5
190
6
200
7
210
8
240
9
240
10
250
Calculate the median rank.
Plot the Weibull distribution line on probability paper.
What is the slope and what class of failure mode it is?
What is the characteristic life?
What is the B10 life?
What percent of the samples are expected to fail before 200 hours?
What is the reliability at 300 hours?
O Also compare your results with Minitab output.
Transcribed Image Text:1. Ten fatigue specimens are tested to failure. The failure times in hours are given below. Failure Time to Failure Median Rank Order (Hours) 1 85 2 135 3 150 4 150 5 190 6 200 7 210 8 240 9 240 10 250 Calculate the median rank. Plot the Weibull distribution line on probability paper. What is the slope and what class of failure mode it is? What is the characteristic life? What is the B10 life? What percent of the samples are expected to fail before 200 hours? What is the reliability at 300 hours? O Also compare your results with Minitab output.
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