Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-1861-en_uva-distribution-1861-en
    nameuva-distribution-1861-en
    sectionDistributions/Continuous/t-distribution
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.726
    p-value0.8401

    Question

    From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 14, mean = 59, sd = 8.16 Sample 2: n = 19, mean = 36, sd = 8.98. The pooled variance estimator takes the value 74.75. 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 33 degrees of freedom
    2. FALSE: An F-division with 14 and 19 degrees of freedom
    3. FALSE: An F-division with 13 and 18 degrees of freedom
    4. TRUE: A T distribution with 31 degrees of freedom

    1. A T-distribution with 33 degrees of freedom: Incorrect
    2. An F-division with 14 and 19 degrees of freedom: Incorrect
    3. An F-division with 13 and 18 degrees of freedom: Incorrect
    4. A T-division with 31 degrees of freedom: Correct