Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-expected-value-1147-en_uva-expected-value-1147-en
    nameuva-expected-value-1147-en
    sectionProbability/Elementary Probability/Random variables/Expected value
    typeschoice
    solutionTRUE, FALSE, FALSE, FALSE
    TypeConceptual, Calculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    A pure coin is tossed 100 times. The random variable X is: the number of times head is on top. What is the expectation value of X?


    1. TRUE: 50
    2. FALSE: 100
    3. FALSE: 200
    4. FALSE: 400

    1. 50: Correct
    2. 100: Incorrect
    3. 200: Incorrect
    4. 400: Incorrect