Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_vufsw-critical_value-1276-en_vufsw-critical_value-1276-en
    namevufsw-critical value-1276-en
    sectioninferential statistics/nhst/significance level/critical value
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE, FALSE, FALSE
    Typeconceptual
    ProgramNA
    LanguageEnglish
    Levelstatistical literacy

    Question

    A researcher is interested in the percentage of residents of the Netherlands that sometimes feel unsafe in the street. She collects data from a random sample of 81 individuals. In this sample, 37.5% answers that they sometimes feel unsafe in the street. He wants to estimate the 95% confidence interval of this variable.

    Which is the critical z-value that corresponds to a 95% confidence interval? Round to 2 decimals.


    1. FALSE: 1.99
    2. TRUE: 1.96
    3. FALSE: 2.58
    4. FALSE: 2.33
    5. FALSE: 2.98
    6. FALSE: 2.64

    1. False
    2. True
    3. False
    4. False
    5. False
    6. False