Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-independent-samples-means-388-en_uva-independent-samples-means-388-en
    nameuva-independent-samples-means-388-en
    sectionInferential Statistics/Parametric Techniques/t-test/Independent samples means
    typeschoice
    solutionFALSE, FALSE, TRUE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty4.201
    p-value0.0841

    Question

    To test the null hypothesis that two population averages are equal, we drew a sample from both populations, one sized of n = 10, the other of n = 8. The critical range of the two samples T-test for independent samples is then, at a two-sided risk of 5%, equal to


    1. FALSE: < -2.1199, 2.1199 >
    2. FALSE: < -2.1009, 2.1009 >
    3. TRUE: < -∞,-2.1199] ∪ [2.1199, ∞ >
    4. FALSE: < -∞,-2.1009] ∪ [2.1009, ∞ >

    1. < -2.1199, 2.1199 >: Incorrect
    2. < -2.1009, 2.1009 >: Incorrect
    3. < -∞,-2.1199] ∪ [2.1199, ∞ >: Correct
    4. < -∞,-2.1009] ∪ [2.1009, ∞ >: Incorrect