Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-1854-en_uva-distribution-1854-en
    nameuva-distribution-1854-en
    sectionDistributions/Continuous/t-distribution
    typeschoice
    solutionFALSE, FALSE, TRUE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.944
    p-value0.786

    Question

    From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 19, mean = 34, sd = 12.01 Sample 2: n = 16, mean = 26, sd = 10.58 The pooled variance estimator takes the value 129.56. It is tested whether the population averages are equal. The corresponding test size follows, if the null hypothesis is TRUE,


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

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