<PRE><B>Question 450740</B>
amateur athletes were classified according to nutrition and injuries. the results are in the chart.
     injury rate
                  low      average     high
poor nutrition     3          5         12
good nutrition     19         7          4

a. what is the probability of randomly selecting an athlete who has an average injury rate?::12/50
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b. what is the probability of randomly selecting an athlete who has poor nutrition and a high injury rate?::12/50
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c. what is the probability of randomly selecting an athlete with a low injury rate given that the athlete has good nutrition?::19/30
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d. what is the probability of randomly selecting an athlete who has poor nutrition or a low injury rate?::[20+22-3]/50 = 39/50
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Cheers,
Stan H.</PRE>