Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_vufsw-confidencelevel-1180-en_vufsw-confidencelevel-1180-en
    namevufsw-confidencelevel-1180-en
    sectioninferential statistics/confidence intervals/confidence level
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    Typeconceptual
    ProgramNA
    LanguageEnglish
    Levelstatistical literacy

    Question

    What is the correct z-score for a 97% confidence interval for a population proportion?


    1. FALSE: 1.88
    2. FALSE: 1.96
    3. FALSE: 2.05
    4. TRUE: 2.17

    Solution

    It is 2.17.

    Explanation: 3% left and right, thus 1,5 % left for the table = 98,5.
    Look at 0.985 in the table (table: Standard Normal Cumulative Probabilities) and it is 2.17.

    Levels of Difficulty
    Easy

    M&T Distributions
    Default value

    M&T Hypothesis testing: proportions
    Default value


    1. False
    2. False
    3. False
    4. True