Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_vufsw-width-1177-en_vufsw-width-1177-en
    namevufsw-width-1177-en
    sectioninferential statistics/confidence intervals/width
    typeschoice
    solutionFALSE, FALSE, TRUE, FALSE, FALSE
    Typecalculation
    Programcalculator
    LanguageEnglish
    Levelstatistical literacy

    Question

    Suppose the population average of hours worked per week per person is 40.2 hours, with a population standard deviation of 0.4 hours. Suppose that you draw samples from this population (with a sample size of 40).

    Between which two values 95% of the sample mean will be?


    1. FALSE: 38.94; 41.47
    2. FALSE: 39.40; 41.00
    3. TRUE: 40.07; 40.33
    4. FALSE: 40.14; 40.26
    5. FALSE: 38.24; 42.16

    Solution

    You can calculate this with the following formula: CI for mean y +/- t(se) with se = s / √n

    Thus: 40.2 +/- 1.96 * (0.4 / √40) = (40.07; 40.33)

    Language
    Nederlands

    Levels of Difficulty
    Difficult

    M&T BIS
    Default value

    M&T Distributions
    Default value


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