You Do It

  1. 35.

    1. A tree is probably easier for two main reasons: The probabilities are given as conditional probabilities, and the options for the two types of vehicles are not the same.

    2. 1/8

  2. 37. 0.21

  3. 39. ≈ 0.91

  4. 41. We assume that any order of selection of the parts is equally likely.

    1. 7/22

    2. 21/22

    3. 7/99

    4. ≈ 0.00884

  5. 43.

    1. 1/12

    2. 1/11

    3. Because the events are dependent

  6. 45.

    1. Dependent.

    2. 21/46

    3. ≈ 0.1439

  7. 47.

    1. P(Service|Man)

    2. 32/(32 + 17) ≈ 0.653

    3. Easiest for mining and construction; hardest for management and professional.

    4. (14 + 20)/2 = 0.17

  8. 49.

    1. 0.82

    2. 5/9

  9. 51. 0.2284/0.29 ≈ 0.79

  10. 53. 4M Scanner Data

    The following table shows the conditional distributions within columns.

    Number of Dogs Owned
    Joint probability Col probability 0 1 2 3 More than 3 Total ...

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