Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-1859-en_uva-distribution-1859-en
    nameuva-distribution-1859-en
    sectionDistributions/Continuous/t-distribution
    typeschoice
    solutionFALSE, FALSE, TRUE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2.032
    p-value0.5673

    Question

    From each of two normally distributed populations with equal variances a sample is drawn.______________. Sample 1: n = 13, mean = 24, sd = 3.89 Sample 2: n = 19, mean = 47, sd = 10.35. The pooled variance estimator takes the value 70.33. 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 13 and 19 degrees of freedom
    2. FALSE: An F-division with 12 and 18 degrees of freedom
    3. TRUE: A T distribution with 30 degrees of freedom
    4. FALSE: A T distribution with 32 degrees of freedom

    1. An F-distribution with 13 and 19 degrees of freedom: Incorrect
    2. An F-division with 12 and 18 degrees of freedom: Incorrect
    3. A T-division with 30 degrees of freedom: Correct
    4. A T-division with 32 degrees of freedom: Incorrect