Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-expected-value-1271-en_uva-expected-value-1271-en
    nameuva-expected-value-1271-en
    sectionProbability/Elementary Probability/Random variables/Expected value
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2.775
    p-value0.4306

    Question

    Out of every 100 people, 10 will be randomly chosen who will each win a €5 gift certificate. What then is the standard deviation of the amount won amount for one person?


    1. FALSE: € 0,50
    2. TRUE: € 1,50
    3. FALSE: € 2,25
    4. FALSE: € 2,50
    5. FALSE: € 4,50

    1. € 0,50: Incorrect
    2. € 1,50: Correct
    3. € 2,25: Incorrect
    4. € 2,50: Incorrect
    5. € 4,50: Incorrect