SOLUTION: In a study of 4000 men who are 60 years old, 2600 were found to be grandfathers. Based on this data, what is the probability of a 60-year-old man being a grandfather?

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Question 293913: In a study of 4000 men who are 60 years old, 2600 were found to be grandfathers. Based on this data, what is the probability of a 60-year-old man being a grandfather?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
2600/4000=13/20 probability of a 60-year-old man being a grandfather.