Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-rules-for-expected-values-1103-en_uva-rules-for-expected-values-1103-en
    nameuva-rules-for-expected-values-1103-en
    sectionProbability/Elementary Probability/Random variables/Rules for expected values
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    Jody is taking two courses: English and History. Assume the probability that she will will get an 8 at the end of the semester for:_____.  P(grade 8 on the English exam) = 0.70. P(grade 8 for the History exam) = 0.60. P(grade 8 for both English and History exams) = 0.50  Then what is the probability that Jody will get an 8 in at least one subject?


    1. FALSE: 0,30
    2. FALSE: 0,42
    3. FALSE: 0,50
    4. TRUE: 0,80

    1. 0.30: Incorrect
    2. 0.42: Incorrect
    3. 0.50: Incorrect
    4. 0.80: Correct