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You are in charge of quality control for a company manufactures a famous luxury brand of handbags. There are three different defects that you must
You are in charge of quality control for a company manufactures a famous luxury brand of handbags. There are three different defects that you must be on the lookout for. A defect in any of these areas means the handbag can not be sold, and must be either recycled or destroyed.
- Defects in stitching: 11% of items
- Defects in coloring: 8% of items
- Defects in materials: 4% of items
Because the areas (stitching, coloring/dying, materials) are done by different suppliers or in different areas of the manufacturing plant, you may assume that the types of defects are independent of each other.
- If there is a defect in all of the areas, the product must be destroyed. What percentage of bags will need to be destroyed?
- A defect in coloring or materials means the product can not be recycled, and must therefore be destroyed. For what percentage of bags will this be the case?
- What is the probability that a defect will be found of any of the three types?
- What is the probability of finding at least one type of defect? (You must use the complement rule to answer this question.)
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