Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-expected-value-1146-en_uva-expected-value-1146-en
    nameuva-expected-value-1146-en
    sectionProbability/Elementary Probability/Random variables/Expected value
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    A pure coin is tossed 200 times. The random variable X is: the number of times head is on top. What is the expectation value of X?


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

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