Exam 1

  1. Metainformation

    Tag Value
    fileProbability_vufsw-expectedvalue-0118-en_vufsw-expectedvalue-0118-en
    namevufsw-expectedvalue-0118-en
    sectionprobability/elementary probability/random variables/expected value
    typeschoice
    solutionTRUE, FALSE, FALSE, FALSE
    Typecalculation
    Programcalculator
    LanguageEnglish
    Levelstatistical thinking

    Question

    When examining how often gamers between the ages of 18-25 play video games play, one researcher finds the results in the table below.

    What is the expected value (expected value) of the number of hours that gamers aged 18-25 years play video games per week based on this sample? Round to one decimal place.


    1. TRUE: 7.7 hours
    2. FALSE: 5.5 hours
    3. FALSE: Between 3.0 and 5.5 hours
    4. FALSE: Between 9.5 and 18.0 hours

    1. True
    2. False
    3. False
    4. False