Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-conditional-probability-948-en_uva-conditional-probability-948-en
    nameuva-conditional-probability-948-en
    sectionProbability/Elementary Probability/Conditional probability
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    We write the names of 50 students on pieces of paper and put them in a box. We take one name for each of the three questions without putting back. Marja is relieved because the first two questions are answered are answered by her classmates. Now what is the probability for Marja to have to answer the third question to have to answer?


    1. FALSE: 1/50
    2. TRUE: 1/48
    3. FALSE: 3/50
    4. FALSE: 1/3

    1. 1/50: Incorrect
    2. 1/48: Correct
    3. 3/50: Incorrect
    4. 1/3: Incorrect