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A national survey of bank customers finds that 45 % are younger than 50. Of those younger than50, 3 of 5 conduct their banking online.

A national survey of bank customers finds that 45% are younger than 50. Of those younger than50, 3 of 5 conduct their banking online. Of those older than50, only 1 of 6 banks online. Draw a tree for this situation. Why is the tree better than the table in thiscase? Where are the joint probabilitiesfound?

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