Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-addition-rule-564-en_uva-addition-rule-564-en
    nameuva-addition-rule-564-en
    sectionProbability/Elementary Probability/General Rules/Addition rule
    typeschoice
    solutionFALSE, FALSE, TRUE, FALSE
    TypeCalculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    The following cross tabulation includes data from 100 individuals for two variables A and B. We randomly draw someone from among the 100 individuals.

    ——- ——- ——- ——- A = 1 A = 2 A = 3 B = 1 19 20 23 B = 2 18 2 18 ——- ——- ——- ——-

    For this person, P(A = 1 ∪ B = 2) equals


    1. FALSE: 0.18
    2. FALSE: 0.39
    3. TRUE: 0.57
    4. FALSE: 0.75

    1. 0.18: Incorrect
    2. 0.39: Incorrect
    3. 0.57: Correct
    4. 0.75: Incorrect