Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-conditional-probability-539-en_uva-conditional-probability-539-en
    nameuva-conditional-probability-539-en
    sectionProbability/Elementary Probability/Conditional probability
    typeschoice
    solutionFALSE, FALSE, TRUE, FALSE
    TypeCalculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    The following cross tabulation includes data from 200 individuals for two variables A and B.

    ——- ——- ——- ——- A = 1 A = 2 A = 3 B = 1 50 36 64 B = 2 20 12 18 ——- ——- ——- ——-

    We randomly draw someone from the 200 people. For this person: P(A=1 ∪ A=2 B=1) is equal to


    1. FALSE: 0
    2. FALSE: 0.43
    3. TRUE: 0.57
    4. FALSE: 0.59

    1. 0: Incorrect
    2. 0.43: Incorrect
    3. 0.57: Correct
    4. 0.59: Incorrect