Question
Eyeglassomatic manufactures eyeglasses for different retailers They test to see how many defective lenses they made in a time period The folllowing table gives the
Eyeglassomatic manufactures eyeglasses for different retailers They test to see how many defective lenses they made in a time period The folllowing table gives the type of defect and the number of lenses with that defect Assume categories are mutually exclusive Defect Type Scratch Right shaped small Flaked Wrong axis Chamfer wrong Crazing cracks Wrong shape Wrong PD Spots and bubbles Wrong height Right shape big Lost in lab intern Spots bubbles Frequency 5621 4672 1803 1418 1775 1561 1583 1550 1410 1123 1348 991 990 a Find the probability that a randomly selected defect from the table will be in the categor Right shaped small or the category Wrong axis Give your answer as a fraction Give your answer rounded to three decimal places b Find the probability that a randomly selected defect is not in the category Right shaped small Given your answer as a fraction Give your answer rounded to three decimal places
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