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

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Basic Math

Eyeglassomatic manufactures eyeglasses for different retailers.They test to see how many defective lenses they made the timeperiod of January 1 to March 31. Table #11.2.4 gives the defect andthe number of defects.

Table #11.2.4: 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 - interim

976

Do the data support the notion that each defect type occurs inthe same proportion? Test at the 10% level.

Answer & Explanation Solved by verified expert
3.7 Ratings (516 Votes)
null hypothesis Hoeach defect type occurs in thesame proportionalternate hypotheiss Haat least one type of defect occur indifferent proportiondegree of freedom categories1 13112for 12 df and 01    See Answer
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