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Mathematics, 06.10.2019 03:00 jjdj5218
When the health department tested private wells in a county for two impurities commonly found in drinking water, it found that 20% of the wells had neither impurity, 40% had impurity a, and 50% had impurity b. (obviously, some had both impurities.) if a well is randomly chosen from those in the county, find the probability distribution for y , the number of impurities found in the well.
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When the health department tested private wells in a county for two impurities commonly found in dri...
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