Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-independent-samples-means-312-en_uva-independent-samples-means-312-en
    nameuva-independent-samples-means-312-en
    sectionInferential Statistics/Parametric Techniques/t-test/Independent samples means
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeConceptual, Interpreting output
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty3.836
    p-value0.1496

    Question

    For an experiment on the effectiveness of an assistance program for self-efficacy in the elderly, people are randomly assigned to a control or treated group. The SPSS output below includes a test on equality of mean age. At a two-sided risk of 5% the conclusion of this t-test for equality of means should read:


    1. FALSE: Population averages are unequal
    2. TRUE: Population averages could be equal
    3. FALSE: Sample averages are unequal
    4. FALSE: Sample averages could be equal

    1. Population averages are unequal: Incorrect
    2. Population averages could be equal: Correct
    3. Sample averages are unequal: Incorrect
    4. Sample averages could be equal: Incorrect