Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uu-Power-832-en_uu-Power-832-en
    nameuu-Power-832-en
    sectionInferential Statistics/NHST/Power
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeCalculation
    Program
    LanguageEnglish
    LevelStatistical Literacy

    Question

    A teacher wants to know if the current group of first-year students is performing better than the freshmen in the previous year. He does this by comparing the average exam scores. Last year that average was 6.0. A sample of 61 students is now drawn from the current year. The instructor considers this year “better” only if at least an average exam grade of 6.5 is achieved. The dispersion in the population is unchanged, i.e. σ = 1.7.

    What is the power of the one-way test at α = .05


    1. FALSE: .29
    2. TRUE: .74
    3. FALSE: .85
    4. FALSE: .95

    1. This answer is incorrect.
    2. This answer is correct.
    3. This answer is incorrect.
    4. This answer is incorrect.