Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-rules-for-expected-values-922-en_uva-rules-for-expected-values-922-en
    nameuva-rules-for-expected-values-922-en
    sectionProbability/Elementary Probability/Random variables/Rules for expected values
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty3.867
    p-value0.146

    Question

    Suppose the probability of a student completing Chemistry is 1/3 and English is 4/9. The probability that she will complete either Chemistry or English (or both) will complete either Chemistry or English (or both) is 11/15. Then what is the probability that she will complete both subjects complete?


    1. FALSE: 33/45
    2. FALSE: 24/15
    3. FALSE: 11/45
    4. TRUE: 2/45

    1. 33/45: Incorrect
    2. 24/15: Incorrect
    3. 11/45: Incorrect
    4. 2/45: Correct