Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-addition-rule-380-en_uva-addition-rule-380-en
    nameuva-addition-rule-380-en
    sectionProbability/Elementary Probability/General Rules/Addition rule
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeConceptual, Calculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    It is given that P(A) = 0.4, P(B) = 0.25 and P(A ∩ B) = 0.1. P(A ∪ B) is equal to


    1. FALSE: 0.45
    2. TRUE: 0.55
    3. FALSE: 0.65
    4. FALSE: 0.75

    1. 0.45: Incorrect
    2. 0.55: Correct
    3. 0.65: Incorrect
    4. 0.75: Incorrect