MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Eyeglassomatic manufactures eyeglasses for different retailers.  They test to see how many defective lenses they made in a time period.  Table #4.2.2 gives the defect and the number of defects.

Table #4.2.2: Number of Defective Lenses

Defect type

Number of defects

Scratch

5865

Right shaped – small

4613

Flaked

1992

Wrong axis

1838

Chamfer wrong

1596

Crazing, cracks

1546

Wrong shape

1485

Wrong PD

1398

Spots and bubbles

1371

Wrong height

1130

Right shape – big

1105

Lost in lab

976

Spots/bubble – intern

976

 

  • Find the probability of picking a lens that is scratched or flaked.
  • Find the probability of picking a lens that is the wrong PD or was lost in lab.
  • Find the probability of picking a lens that is not scratched.
  • Find the probability of picking a lens that is not the wrong shape.

 

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