Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-1899-en_uva-distribution-1899-en
    nameuva-distribution-1899-en
    sectionDistributions/Continuous/t-distribution
    typeschoice
    solutionTRUE, FALSE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.704
    p-value0.8442

    Question

    From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 18, mean = 27, sd = 7.99 Sample 2: n = 14, mean = 44, sd = 10.4. The pooled variance estimator takes the value 83.05. 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 30 degrees of freedom
    2. FALSE: An F-division with 18 and 14 degrees of freedom
    3. FALSE: An F-division with 17 and 13 degrees of freedom
    4. FALSE: A T distribution with 32 degrees of freedom

    1. A T-distribution with 30 degrees of freedom: Correct
    2. An F-division with 18 and 14 degrees of freedom: Incorrect
    3. An F-division with 17 and 13 degrees of freedom: Incorrect
    4. A T-division with 32 degrees of freedom: Incorrect