Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-critical-value-166-en_uva-critical-value-166-en
    nameuva-critical-value-166-en
    sectionInferential Statistics/NHST/Significance level/Critical value
    typeschoice
    solutionFALSE, FALSE, TRUE
    TypeConceptual, Calculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty3.679
    p-value0.1769

    Question

    It examines how many people would answer yes when asked whether they ever feel depressed. The percentage who answer “yes” answers is 25% from a sample of 100 randomly asked people. The researchers want to know if the percentage is greater than 20%. To that end they set the null hypothesis to H0: p0 = 20%. From what percentage can the null hypothesis be rejected when a significance level is used of 2.5%?


    1. FALSE: 0.21
    2. FALSE: 0.25
    3. TRUE: 0.28

    1. 0.21: Incorrect
    2. 0.25: Incorrect
    3. 0.28: Correct