A steel plate contains 20 bolts. Assume that 5 bolts are not torqued to the proper limit.
Question:
A steel plate contains 20 bolts. Assume that 5 bolts are not torqued to the proper limit. 4 bolts are selected at random, without replacement, to be checked for torque. If an operator checks a bolt, the probability that an incorrectly torqued bolt is identified is 0.95. If a checked bolt is correctly torqued, the operator’s conclusion is always correct. What is the probability that at least one bolt in the sample of four is identified as being in correctly torqued?
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Let E denote the event that none of the bolts are identified ...View the full answer
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Related Book For 
Applied Statistics And Probability For Engineers
ISBN: 9781118539712
6th Edition
Authors: Douglas C. Montgomery, George C. Runger
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