Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-paired-samples-395-en_uva-paired-samples-395-en
    nameuva-paired-samples-395-en
    sectionInferential Statistics/Parametric Techniques/t-test/Paired samples
    typeschoice
    solutionTRUE, FALSE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty3.809
    p-value0.1547

    Question

    The heart rate before and 15 minutes after prolonged strenuous exercise was measured, with the results being:

    ————— —- —- —- —- —- Person 1 2 3 4 5 Heart rate before 70 65 81 57 74 Heart rate a 75 64 86 59 79 ————— —- —- —- —- —-

    We want to test whether the difference between the average heart rate after and before exercise is equal to 0, using a paired T test. The critical area when testing with 5% two-sided risk is equal to


    1. TRUE: < -∞,-2.7764] ∪ [2.7764, ∞ >
    2. FALSE: < - ∞,-2.5706] ∪ [2.5706, ∞ >
    3. FALSE: < -2.3060, 2.3060 >
    4. FALSE: < -2.5706, 2.5706 >

    1. < -∞,-2.7764] ∪ [2.7764, ∞ >: Correct
    2. < - ∞,-2.5706] ∪ [2.5706, ∞ >: Incorrect
    3. < -2.3060, 2.3060 >: Incorrect
    4. < -2.5706, 2.5706 >: Incorrect