Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-1863-en_uva-distribution-1863-en
    nameuva-distribution-1863-en
    sectionDistributions/Continuous/t-distribution
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.685
    p-value0.8468

    Question

    From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 14, mean = 43, sd = 8.08 Sample 2: n = 20, mean = 53, sd = 11.67. The pooled variance estimator takes the value 107.38. 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 13 and 19 degrees of freedom
    2. FALSE: A T distribution with 34 degrees of freedom
    3. FALSE: An F-division with 14 and 20 degrees of freedom
    4. TRUE: A T distribution with 32 degrees of freedom

    1. An F-distribution with 13 and 19 degrees of freedom: Incorrect
    2. A T-division with 34 degrees of freedom: Incorrect
    3. An F-division with 14 and 20 degrees of freedom: Incorrect
    4. A T-division with 32 degrees of freedom: Correct