Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-confidence-level-861-en_uva-confidence-level-861-en
    nameuva-confidence-level-861-en
    sectionInferential Statistics/Confidence Intervals/Confidence level
    typeschoice
    solutionFALSE, FALSE, TRUE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty3.782
    p-value0.1583

    Question

    It examines how many people would answer yes when asked whether they ever feel depressed. The percentage who answered with “yes. answers is 37% from a sample of 350 randomly asked people. The researchers want to know if the percentage is greater than 35%. To that end they set the null hypothesis at H0: p0 = 35%. From what percentage can the null hypothesis be rejected when a significance level is used of 2.5%?


    1. FALSE: 30%
    2. FALSE: 35%
    3. TRUE: 40%

    1. 30%: Incorrect
    2. 35%: Incorrect
    3. 40%: Correct