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Aluminum castings are processed in lots of ve each. A sample of two castings is randomly selected from each lot for inspection. A particular lot
Aluminum castings are processed in lots of ve each. A sample of two castings is randomly selected from each lot for inspection. A particular lot contains one defective casting; and x is the number of defective castings in the sample. P(x= 1) is _. O 1.0 O 0.8 O 0.2 O 0.4 0.6
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