Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-sample-mean-484-en_uva-sample-mean-484-en
    nameuva-sample-mean-484-en
    sectionInferential Statistics/Sampling Distributions/Sample mean
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    From a normally distributed population N(200, 20²), I draw a sample of size 4. The probability that the sample mean is less than 190 is equal to


    1. FALSE: 2.28%
    2. TRUE: 15.87%
    3. FALSE: 30.85%
    4. FALSE: 34.13%

    1. 2.28%: Incorrect
    2. 15.87%: Correct
    3. 30.85%: Incorrect
    4. 34.13%: Incorrect