Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-confidence-level-860-en_uva-confidence-level-860-en
    nameuva-confidence-level-860-en
    sectionInferential Statistics/Confidence Intervals/Confidence level
    typeschoice
    solutionTRUE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty3.742
    p-value0.164

    Question

    It examines how many people would answer yes when asked whether they ever feel depressed. The percentage who answered with “yes. answers is 28% from a sample of 350 randomly asked people. The researchers want to know if the percentage is greater than 20%. To that end they set the null hypothesis at H0: p0 = 20%. From what percentage can the null hypothesis be rejected when a significance level is used of 2.5%?


    1. TRUE: 24%
    2. FALSE: 29%
    3. FALSE: 31%

    1. 24%: Correct
    2. 29%: Incorrect
    3. 31%: Incorrect