In a test of weld strength 80 of tests result in a fracture

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Reference no: EM13632907

In a test of weld strength, 80% of tests result in a fracture in the weld,while 20% result in fracture in the beam. Let X denotes the number of failed trials that precede the 3rd beam fracture.

1.) What is the distribution of X

2.) Find p(x=8)

Reference no: EM13632907

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