Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-1856-en_uva-distribution-1856-en
    nameuva-distribution-1856-en
    sectionDistributions/Continuous/t-distribution
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.786
    p-value0.8226

    Question

    From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 16, mean = 35, sd = 6.06 Sample 2: n = 11, mean = 29, sd = 3.96. The pooled variance estimator takes the value 28.31. It is tested Whether the population averages are equal. The corresponding test size follows, if the null hypothesis is TRUE,


    1. FALSE: A T distribution with 27 degrees of freedom
    2. TRUE: A T distribution with 25 degrees of freedom
    3. FALSE: An F-division with 16 and 11 degrees of freedom
    4. FALSE: An F-division with 15 and 10 degrees of freedom

    1. A T-distribution with 27 degrees of freedom: Incorrect
    2. A T-division with 25 degrees of freedom: Correct
    3. An F-division with 16 and 11 degrees of freedom: Incorrect
    4. An F-division with 15 and 10 degrees of freedom: Incorrect