Practice with Conditional Probability

Complete these exercises and check your answers.

Review Questions

  1. 2 fair dice are rolled. What is the probability that the sum is even given that the first die that is rolled is a 2?

  2. 2 fair dice are rolled. What is the probability that the sum is even given that the first die rolled is a 5?

  3. 2 fair dice are rolled. What is the probability that the sum is odd given that the first die rolled is a 5?

  4. Steve and Scott are playing a game of cards with a standard deck of playing cards. Steve deals Scott a black king. What is the probability that Scott's second card will be a red card?

  5. Sandra and Karen are playing a game of cards with a standard deck of playing cards. Sandra deals Karen a red seven. What is the probability that Karen's second card will be a black card?

     

Source: CK-12, https://www.ck12.org/book/ck-12-basic-probability-and-statistics-concepts/section/2.7/

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