Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-1894-en_uva-distribution-1894-en
    nameuva-distribution-1894-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 = 19, mean = 52, sd = 5.3. Sample 2: n = 13, mean = 37, sd = 3.29. The pooled variance estimator takes the value of 21.18. 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 19 and 13 degrees of freedom
    4. FALSE: An F-division with 18 and 12 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 19 and 13 degrees of freedom: Incorrect
    4. An F-division with 18 and 12 degrees of freedom: Incorrect