Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-expected-value-665-en_uva-expected-value-665-en
    nameuva-expected-value-665-en
    sectionProbability/Elementary Probability/Random variables/Expected value
    typenum
    solution2.74
    tolerance0
    TypeCalculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.792
    p-value0.8195

    Question

    You do a survey on birth weight. You make a distinction between boys and girls and for that you have the following data (in kg) of the children selected by random sampling)from from all babies born last year.

    ——— —— —— —— —— —— —— —— Boys 2.63 2.81 2.95 2.99 3.08 3.18 Girls 1.91 2.59 2.81 2.86 2.95 2.99 3.04 ——— —— —— —— —— —— —— ——


    Solution

    The correct answer is: 2.74