Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-1851-en_uva-distribution-1851-en
    nameuva-distribution-1851-en
    sectionDistributions/Continuous/t-distribution
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.93
    p-value0.7994

    Question

    From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 18, mean = 45, sd = 9.28 Sample 2: n = 19, mean = 46, sd = 10.01. The pooled variance estimator takes the value 93.36. 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 37 degrees of freedom
    2. TRUE: A T distribution with 35 degrees of freedom
    3. FALSE: An F-division with 18 and 19 degrees of freedom
    4. FALSE: An F-division with 17 and 18 degrees of freedom

    1. A T-distribution with 37 degrees of freedom: Incorrect
    2. A T-division with 35 degrees of freedom: Correct
    3. An F-division with 18 and 19 degrees of freedom: Incorrect
    4. An F-division with 17 and 18 degrees of freedom: Incorrect