Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-multiplication-rule-941-en_uva-multiplication-rule-941-en
    nameuva-multiplication-rule-941-en
    sectionProbability/Elementary Probability/General Rules/Multiplication rule
    typeschoice
    solutionTRUE, FALSE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.826
    p-value0.8123

    Question

    According to the Centers for Disease Control in the USA, the long-term relative frequency of births to boys in the United States is approximately 0.512. Contrast the events:______
    * A = Two girls,‖ and * B = Two boys.  If you randomly choose one woman in the USA who has two children, what is then the probability that both children are girls?


    1. TRUE: 0,238
    2. FALSE: 0,250
    3. FALSE: 0,262
    4. FALSE: 0,488

    1. 0.238: Correct
    2. 0.250: Incorrect
    3. 0.262: Incorrect
    4. 0.488: Incorrect