Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-critical-value-122-en_uva-critical-value-122-en
    nameuva-critical-value-122-en
    sectionInferential Statistics/NHST/Significance level/Critical value
    typeschoice
    solutionFALSE, TRUE, FALSE
    TypeConceptual, Calculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2.042
    p-value0.5554

    Question

    It examines how many people would answer yes when asked whether they agree with the age increase of the state pension from 65 to 67 years. The percentage answering “yes” is 60% from a sample of 240 people asked at random. The researchers want to know if the population percentage is greater than 30%. To this end, they set the null hypothesis H0: p0 = 30%. From what percentage can the null hypothesis be rejected when a significance level is used of 2.5%?


    1. FALSE: 0.30
    2. TRUE: 0.36
    3. FALSE: 0.60

    1. 0.30: Incorrect
    2. 0.36: Correct
    3. 0.60: Incorrect