Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-multiplication-rule-1109-en_uva-multiplication-rule-1109-en
    nameuva-multiplication-rule-1109-en
    sectionProbability/Elementary Probability/General Rules/Multiplication rule
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    In recent US elections, 55% of all voters voted Republican and 45% did not. Of the Republicans, 80% vote for candidate X, and of the non-Republicans, 10% vote for candidate X. Take one random voter in the US and define the events:‖  A = Voters are Republicans. B = Voters vote for candidate X.  What then is the probability of P(A and B)?


    1. FALSE: 0,045
    2. TRUE: 0,440
    3. FALSE: 0,485
    4. FALSE: 0,550

    1. 0.045: Incorrect
    2. 0.440: Correct
    3. 0.485: Incorrect
    4. 0.550: Incorrect