Question

The following table identifies a group of children by one of four hair colors, and by...

The following table identifies a group of children by one of four hair colors, and by type of hair.

Hair Type Brown Blond Black Red Totals
Wavy 19 17 3 43
Straight 81 13 14
Totals 17 216

  • Part (a)

    Complete the table.
    Hair Type Brown Blond Black Red Totals
    Wavy 19 17 3 43
    Straight 81 13 14
    Totals 17 216

  • What is the probability that a randomly selected child will have wavy hair? (Enter your answer as a fraction.)

  • Part (c)

    What is the probability that a randomly selected child will have either brown or blond hair? (Enter your answer as a fraction.)

  • Part (d)

    What is the probability that a randomly selected child will have wavy brown hair? (Enter your answer as a fraction.)

  • Part (e)

    What is the probability that a randomly selected child will have red hair, given that he has straight hair? (Enter your answer as a fraction.)

  • Part (f)

    If B is the event of a child having brown hair, find the probability of the complement of B. (Enter your answer as a fraction.)

  • Part (g)

    If B is the event of a child having brown hair, what does the complement of B represent?

    The complement of B would be the event of a child having blond hair.

  • The complement of B would be the event of a child having wavy or straight hair.     

  • The complement of B would be the event of a child not having brown hair.

  • The complement of B would be the event of a child having blond or black hair.

Math   Statistics-And-Probability   
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