Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-addition-rule-1106-en_uva-addition-rule-1106-en
    nameuva-addition-rule-1106-en
    sectionProbability/Elementary Probability/General Rules/Addition rule
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    Jody is taking three courses: English, History and Mathematics. Assume the probability that she will get an 8 in all courses 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 two subjects?


    1. FALSE: 0,09
    2. FALSE: 0,14
    3. FALSE: 0,21
    4. TRUE: 0,44

    1. 0.09: Incorrect
    2. 0.14: Incorrect
    3. 0.21: Incorrect
    4. 0.44: Correct