claudiocamera
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probability question
I have an exercise and I am clueless, can you help me ?
1000 screws are daily produced in a line of production, the shanks have lengths from 0.65 cm to 1,15 cm uniformly distributed. The head always has 0,1 cm, but there are a chance that 1 among 50 screws is headless. At the end of the day a quality control eliminates:
- Screws headless
-Screws with total length less than 0.9 cm.
Determine the probability that 70% of screws are accepted by the quality control at the end of the day.
I have an exercise and I am clueless, can you help me ?
1000 screws are daily produced in a line of production, the shanks have lengths from 0.65 cm to 1,15 cm uniformly distributed. The head always has 0,1 cm, but there are a chance that 1 among 50 screws is headless. At the end of the day a quality control eliminates:
- Screws headless
-Screws with total length less than 0.9 cm.
Determine the probability that 70% of screws are accepted by the quality control at the end of the day.