Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-1888-en_uva-distribution-1888-en
    nameuva-distribution-1888-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 = 14, mean = 22, sd = 8.24. Sample 2: n = 17, mean = 25, sd = 6.11. The pooled variance estimator takes the value 51.03. 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 14 and 17 degrees of freedom
    2. TRUE: A T distribution with 29 degrees of freedom
    3. FALSE: An F-division with 13 and 16 degrees of freedom
    4. FALSE: A T distribution with 31 degrees of freedom

    1. An F-distribution with 14 and 17 degrees of freedom: Incorrect
    2. A T-division with 29 degrees of freedom: Correct
    3. An F-division with 13 and 16 degrees of freedom: Incorrect
    4. A T-division with 31 degrees of freedom: Incorrect