Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uu-Critical-value-809-en_uu-Critical-value-809-en
    nameuu-Critical-value-809-en
    sectionInferential Statistics/NHST/Significance level/Critical value
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    TypeCase
    LanguageEnglish
    LevelStatistical Literacy

    Question

    The scores in a sample of n = 12 have mean M = 5 and standard error sM = 1. A two-sided t-test with α\alpha = 5% results in a test statistic of t = 2.5. What are the lower and upper bounds of the 95% confidence interval, respectively?


    1. FALSE: The confidence interval is irrelevant because the t-test is not significant.
    2. FALSE: Lower limit = 2.5, upper limit = 7.5.
    3. FALSE: Lower limit = 2.821, upper limit = 7.179.
    4. TRUE: Lower limit = 2.799, upper limit = 7.201.