Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-confidence-level-859-en_uva-confidence-level-859-en
    nameuva-confidence-level-859-en
    sectionInferential Statistics/Confidence Intervals/Confidence level
    typeschoice
    solutionFALSE, TRUE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty3.778
    p-value0.1588

    Question

    It examines how many people would answer yes when asked whether they ever feel depressed. The percentage who answer with “yes. answers is 30% from a sample of 350 randomly asked people. The researchers want to know if the percentage is greater than 25%. To that end they set the null hypothesis at H0: p0 = 25%. From what percentage can the null hypothesis be rejected when a significance level is used of 2.5%?


    1. FALSE: 25%
    2. TRUE: 30%
    3. FALSE: 35%

    1. 25%: Incorrect
    2. 30%: Correct
    3. 35%: Incorrect