Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-random-variables-1302-en_uva-random-variables-1302-en
    nameuva-random-variables-1302-en
    sectionProbability/Elementary Probability/Random variables
    typeschoice
    solutionFALSE, FALSE, TRUE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty0.849
    p-value0.8943

    Question

    Which random variable X is not a discrete variable?  I A soccer team plays 12 games in a given season. Suppose X is the number of games that this team won.™ II A woman buys a lottery ticket every week in which the probability of winning of 1 euro is 1/10. Suppose X is her winnings after one year.Ê III A student waits for a bus to pass by every ten minutes. Suppose X is the number of minutes he waits at the bus stop.


    1. FALSE: I is not a discrete variable.
    2. FALSE: II is not a discrete variable.
    3. TRUE: III is not a discrete variable.
    4. FALSE: All of them are not discrete variables.

    1. I is not a discrete variable Incorrect
    2. II is not a discrete variable…: Incorrect
    3. III is not a discrete variable…: Correct
    4. All of them are not discrete variables…: Incorrect