Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-1852-en_uva-distribution-1852-en
    nameuva-distribution-1852-en
    sectionDistributions/Continuous/t-distribution
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    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 = 17, mean = 27, sd = 12.18 Sample 2: n = 15, mean = 20, sd = 11.12. The pooled variance estimator takes the value 136.83. It is tested Whether the population averages are equal. The corresponding test size follows, if the null hypothesis is TRUE,


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

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