Use of the internet for shopping is increasing dramatically, but still is somewhat age dependent. When a popular website that sells books asked the age of users who bought products from them over the internet, they obtained the following data. What is the probability that a buyer on this website is aged 60-69? Age Group Number 10-19 1,946 20-29 3,609 30-39 2,949 40-49 820 50-59 345 60-69 395 70-79 121

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