
Concept explainers
In a survey conducted by Bank of America, college graduates were asked how much money they typically donate to their alma mater each year. The responses are summarized below:
Nothing 58%
Something, but less than $500 32%
S500 or more 10%
Based on these results:
(a) What is the probability that a randomly selected college graduate gives at least something in a typical year?
(b) What is the probability that a randomly selected college graduate gives less than $500 in a typical year?

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