Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-1886-en_uva-distribution-1886-en
    nameuva-distribution-1886-en
    sectionDistributions/Continuous/t-distribution
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.789
    p-value0.8221

    Question

    From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 17, mean = 47, sd = 4.48 Sample 2: n = 15, mean = 21, sd = 8.36. The pooled variance estimator takes the value of 43.32. 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 17 and 15 degrees of freedom
    2. TRUE: A T distribution with 30 degrees of freedom
    3. FALSE: A T distribution with 32 degrees of freedom
    4. FALSE: An F-division with 16 and 14 degrees of freedom

    1. An F-distribution with 17 and 15 degrees of freedom: Incorrect
    2. A T-division with 30 degrees of freedom: Correct
    3. A T-division with 32 degrees of freedom: Incorrect
    4. An F-division with 16 and 14 degrees of freedom: Incorrect