Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-independent-samples-means-249-en_uva-independent-samples-means-249-en
    nameuva-independent-samples-means-249-en
    sectionInferential Statistics/Parametric Techniques/t-test/Independent samples means
    typeschoice
    solutionFALSE, TRUE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty4.027
    p-value0.1099

    Question

    One tests the hypothesis that the average IQ score in a given population is equal to 120, against the alternative hypothesis that that mean is greater than 120. In both cases, the standard deviation is equal to 17. In a random sample of n = 49 individuals, one finds a sample mean of 125. The hypothesis that the population mean is equal to 120 can then be rejected at


    1. FALSE: Α = 0.01
    2. TRUE: Α = 0.05, but not at α = 0.01
    3. FALSE: Α = 0.10, but not at α = 0.05

    1. Α = 0.01: Incorrect
    2. Α = 0.05, but not at α = 0.01: Correct
    3. Α = 0.10, but not at α = 0.05: Incorrect