Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_vufgb-tstatistic-008-en_vufgb-tstatistic-008-en
    namevufgb-tstatistic-008-en
    sectionInferential Statistics/NHST/Test statistic/t-statistic, Distributions/Continuous/t-distribution
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeInterpreting output
    Program
    LanguageEnglish
    LevelStatistical Literacy

    Question

    Given is a t distribution with 23 degrees of freedom.

    At what t value do 97.5% of the values lie on the right-hand side?


    1. FALSE: -2.500
    2. TRUE: -2.069
    3. FALSE: 2.069
    4. FALSE: 2.500

    Solution

    Look in the t table at df=23df = 23.

    A t value of 2.069 gives a right-hand overshoot probability of 2.5%. This means that 2.5% of the values lie on the right. For a t value of -2.069, there are 2.5% of the values on the left, and therefore 97.5% of the values on the right.

    Tip: Draw the t distribution and put in the t values and corresponding exceedance probabilities of the 4 answer options!


    1. Incorrect
    2. Correct
    3. Incorrect
    4. Incorrect