The two events—Albert choosing a costume and Victoria choosing a costume—are dependent events. This is because the choice made by Albert affects the number of costumes available for Victoria to choose from. If Albert takes a costume out of the trunk, that specific costume is no longer available for Victoria. Therefore, the outcome of Albert's choice directly impacts the outcome of Victoria's choice.
The children in Albert's family are trying on costumes from a costume trunk in the attic. Albert chooses a costume, and then Victoria, his sister, chooses next.
Are these two events dependent or independent?
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