Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-confidence-level-781-en_uva-confidence-level-781-en
    nameuva-confidence-level-781-en
    sectionInferential Statistics/Confidence Intervals/Confidence level
    typeschoice
    solutionFALSE, FALSE, TRUE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty1.191
    p-value0.8798

    Question

    The margin of error of a confidence interval for the population mean becomes smaller as


    1. FALSE: The confidence level increases
    2. FALSE: The sample size decreases
    3. TRUE: The standard deviation in the data decreases

    1. The confidence level gets higher: Incorrect
    2. The sample size decreases: Incorrect
    3. The standard deviation in the data decreases: Correct