Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-addition-rule-1105-en_uva-addition-rule-1105-en
    nameuva-addition-rule-1105-en
    sectionProbability/Elementary Probability/General Rules/Addition rule
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.537
    p-value0.8566

    Question

    Jody is taking three courses: English, History and Mathematics. Assume the probability that she will get an 8 in each course at the end of the semester:‖  P(grade 8 on the English exam) = 0.70. P(grade 8 on the History exam) = 0.60. P(grade 8 on the math exam) = 0.50.  The events are independent of each other. Then what is the probability that Jody will get an 8 for only one subject?


    1. FALSE: 0,06
    2. TRUE: 0,29
    3. FALSE: 0,40
    4. FALSE: 0,80

    1. 0.06: Incorrect
    2. 0.29: Correct
    3. 0.40: Incorrect
    4. 0.80: Incorrect