Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-elementary-probability-940-en_uva-elementary-probability-940-en
    nameuva-elementary-probability-940-en
    sectionProbability/Elementary Probability
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    The U.S. Bureau of Statistics examines the relationship between the nighttime lighting in early childhood and the occurrence of myopia later on. The results are shown in the table below:

    ——————— ——————- ——————— ——————– ——– Sleeping with No myopia Light myopia Severe myopia Total No illumination 155 15 2 172 Low illumination 153 72 8 233 Full illumination 34 36 5 75 Total 342 123 15 480 ——————— ——————- ——————— ——————– ——–

    What is the relative frequency of mild myopia when sleeping with full illumination is slept?


    1. FALSE: 0,31
    2. FALSE: 0,32
    3. FALSE: 0,34
    4. TRUE: 0,48

    1. 0.31: Incorrect
    2. 0.32: Incorrect
    3. 0.34: Incorrect
    4. 0.48: Correct