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Eyeglassomatic manufactures eyeglasses for different retailers. They test to see how many defective lenses they made...

  1. Eyeglassomatic manufactures eyeglasses for different retailers. They test to see how many defective lenses they made in a given time period and found that 11% of all lenses had defects of some type. Looking at the type of defects, they found in a three-month time period that out of 34,641 defective lenses, 5865 were due to scratches. Are there a different number of defects from scratches than from all other causes? State the random variable, population parameter, and hypotheses.

Math   Statistics-And-Probability   
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Answer #1

Random variable: Number of defects from scratches

Population parameter: Proportion of defective lenses p = 0.11

Hypotheses are:

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Hypotheses test:

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