Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_vufsw-width-1271-en_vufsw-width-1271-en
    namevufsw-width-1271-en
    sectioninferential statistics/confidence intervals/width
    typeschoice
    solutionFALSE, FALSE, TRUE, FALSE
    Typecalculation
    Programcalculator
    LanguageEnglish
    Levelstatistical literacy

    Question

    In a survey, 1414 respondents were asked how many hours they spent on religious activities. The sample mean was 6.15 hours with a standard deviation of 16.53 hours. Find the 95% confidence interval for the population mean.


    1. FALSE: 5.43; 6.87
    2. FALSE: -26.24; 38.55
    3. TRUE: 5.29; 7.01
    4. FALSE: 5.03; 7.27

    Solution

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

    Thus: 6.15 +/- 1.96* (16.53/ √1414)=(5.29; 7.01)

    Language
    Nederlands

    Levels of Difficulty
    Difficult

    M&T BIS
    Default value

    M&T Distributions
    Default value


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