7. [19.09 Points] DETAILS WACKERLYSTAT7 3.2.001. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER When the health department tested private wells in a county for two impurities commonly found in drinking water, it found that 10% of the wells had neither impurity, 70% had impurity A, and 40% had impurity 5. (Obviously, some had both impurities.) If a well is randomly chosen from those in the county, nd the probability distribution for Y, the number of impurities found in the well. P(no impurities) = S P(exactly one impurity) = S P(both impurities) = Z Need Help