Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-1889-en_uva-distribution-1889-en
    nameuva-distribution-1889-en
    sectionDistributions/Continuous/t-distribution
    typeschoice
    solutionTRUE, FALSE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2.019
    p-value0.5766

    Question

    From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 19, mean = 37, sd = 6.01 Sample 2: n = 16, mean = 33, sd = 5.46. The pooled variance estimator takes the value of 33.25. It is tested whether the population averages are equal. The corresponding test size follows, if the null hypothesis is TRUE,


    1. TRUE: A T-distribution with 33 degrees of freedom
    2. FALSE: An F-division with 18 and 15 degrees of freedom
    3. FALSE: An F-division with 19 and 16 degrees of freedom
    4. FALSE: A T distribution with 35 degrees of freedom

    1. A T-distribution with 33 degrees of freedom: Correct
    2. An F-division with 18 and 15 degrees of freedom: Incorrect
    3. An F-division with 19 and 16 degrees of freedom: Incorrect
    4. A T-division with 35 degrees of freedom: Incorrect