Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_vufsw-confidenceintervals-0094-en_vufsw-confidenceintervals-0094-en
    namevufsw-confidenceintervals-0094-en
    sectioninferential statistics/confidence intervals
    typeschoice
    solutionFALSE, FALSE, TRUE, FALSE
    Typeinterpretating output
    ProgramNA
    LanguageEnglish
    Levelstatistical literacy

    Question

    A researcher conducts a single regression analysis with “Income” (net monthly salary, in euros) as the dependent variable and variable “Age” (age in years) as the independent variable.

    It calculates a 95% confidence interval (confidence interval) of the slope. This interval turns out to be [-0.02; 0.06].

    What can we conclude from this, if we test two-sidedly whether Age has a significant influence on Income? We use here a significance level of 5% (α = 0.05).


    1. FALSE: Age does have a significant influence on Income, because the interval does well contain the number 0.05.
    2. FALSE: Age has no significant influence on Income, because the interval contains well the number 0.05.
    3. TRUE: Age has no significant influence on Income, because the interval contains well the number 0.
    4. FALSE: Age does well significantly affect Income, because the interval does well contain the number 0.

    1. False
    2. False
    3. True
    4. False