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Question: Refer to Exercise 4.45. (a) If


Refer to Exercise 4.45.
(a) If a fast food restaurant selected at random is found to comply with safety standards, what is the probability that it violates sanitary standards?
(b) If a restaurant selected at random is found to violate at least one of the two standards, what is the probability that it complies with safety standards?

Data from Exercise 4.45:
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.



Refer to Exercise 4.45. 
(a) If -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.

2.99

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