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A manufacturer of intraocular lenses is qualifying a new grinding machine. He will qualify the machine...

  1. A manufacturer of intraocular lenses is qualifying a new grinding machine. He will qualify the machine if the percentage of polished lenses that contain surface defects does not exceed 4%. A random sample of 300 lenses contains 18 defective lenses.

Formulate and test an appropriate hypothesis to determine whether the machine can be qualified. Use   a = 0.05.

math   Statistics-And-Probability   
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