Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_vufgb-confidenceinterval-002-en_vufgb-confidenceinterval-002-en
    namevufgb-confidenceinterval-002-en
    sectionInferential Statistics/Regression/Confidence interval, Inferential Statistics/Regression/R squared
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    TypeCalculation, Interpreting output
    Program
    LanguageEnglish
    LevelStatistical Thinking

    Question

    In the analysis that was conducted on the data of 348 students, three variables were used: grade on blackboard tests (BBtot), grade on practicum (PRA) and grade on exam (tenteind). It was assumed in advance assumed that all grades have a positive relationship with each other.

    Determine the 95% confidence interval for the regression coefficient of PRA.


    1. FALSE: −0.067<β2<0.382−0.067 < \beta_{2} < 0.382
    2. FALSE: −0.024<β2<0.282−0.024 < \beta_{2} < 0.282
    3. FALSE: 0.079<β2<0.2350.079 < \beta_{2} < 0.235
    4. TRUE: 0.004<β2<0.3100.004 < \beta_{2} < 0.310

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