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Question: The following frequency table shows the


The following frequency table shows the classification of 58 landfills in a state according to their concentration of the three hazardous chemicals arsenic, barium, and mercury.



The following frequency table shows the classification of 58 landfills in a -1

If a landfill is selected at random, find the probability that it has:
(a) A high concentration of barium.
(b) A high concentration of mercury and low concentrations of both arsenic and barium.
(c) High concentrations of any two of the chemicals and low concentration of the third.
(d) A high concentration of any one of the chemicals and low concentrations of the other two.

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