Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-1892-en_uva-distribution-1892-en
    nameuva-distribution-1892-en
    sectionDistributions/Continuous/t-distribution
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.941
    p-value0.7911

    Question

    From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 11, mean = 56, sd = 12.04 Sample 2: n = 15, mean = 46, sd = 11.84. The pooled variance estimator takes the value 142.18. 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 11 and 15 degrees of freedom
    2. FALSE: An F-division with 10 and 14 degrees of freedom
    3. FALSE: A T distribution with 26 degrees of freedom
    4. TRUE: A T distribution with 24 degrees of freedom

    1. An F-distribution with 11 and 15 degrees of freedom: Incorrect
    2. An F-division with 10 and 14 degrees of freedom: Incorrect
    3. A T-division with 26 degrees of freedom: Incorrect
    4. A T-division with 24 degrees of freedom: Correct