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Home > CCA > Chapter 10 > Lesson 10.1.1 > Problem 10-12


In a certain small town, 65% of the residents subscribe to the city Sunday paper, 37% subscribe to the weekly local paper, and 25% subscribe to both papers. Homework Help ✎

  1. What are the two variables? Create a two-way table.

  1. If a resident is selected at random, what is the probability he or she subscribes to at least one of the two papers?

    Which three boxes in the two-way table represent someone subscribing to at least one paper?

    25% + 12% + 40% = 77%

  1. Charlie’s neighbor subscribes to a paper. What is the probability that he takes the Sunday paper?

  • This is the probability of someone subscribing to the Sunday paper given the information
    that they subscribe to at least one paper. Use your answer from part (b).