Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-random-variables-266-en_uva-random-variables-266-en
    nameuva-random-variables-266-en
    sectionProbability/Elementary Probability/Random variables
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    TypeCalculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.798
    p-value0.8169

    Question

    A record was kept of how many cigarettes from 60 individuals for one month they smoke (rounded) daily. The results are shown in the frequency table

    ———— —- — — — — — — —- —- —- —- —- ——– Cigarettes 0 1 2 3 4 5 7 10 12 15 20 30 Total Frequency 36 4 3 3 4 2 1 2 1 2 1 1 1 60 ———— —- — — — — — — —- —- —- —- —- ——–

    If we draw 1 person from this group, then the probability that this person will have smokes 10 or more cigarettes a day on average, given that they are a smoker, is equal to


    1. FALSE: 0.083
    2. FALSE: 0.117
    3. FALSE: 0.208
    4. TRUE: 0.292

    1. 0.083: Incorrect
    2. 0.117: Incorrect
    3. 0.208: Incorrect
    4. 0.292: Correct