Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-general-rules-1101-en_uva-general-rules-1101-en
    nameuva-general-rules-1101-en
    sectionProbability/Elementary Probability/General Rules
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.176
    p-value0.8814

    Question

    A pure coin is thrown up three times. Suppose event A = all times lies head up. Then what is the complement of A?


    1. FALSE: Three times head also lies up.
    2. TRUE: At least once, coin lies up.
    3. FALSE: At least two times tails are up.
    4. FALSE: All times tails are up.

    1. Three times also lies head up…: Incorrect
    2. At least one time coin lies upward: Correct
    3. At least two times coin lies up…: Incorrect
    4. All times coins lie face up: Incorrect