Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uu-Power-811-en_uu-Power-811-en
    nameuu-Power-811-en
    sectionInferential Statistics/NHST/Power
    typeschoice
    solutionTRUE, FALSE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy

    Question

    Researcher A and B both expect an effect size of .50. Researcher A uses a α\alpha of 5%, and researcher B uses a α\alpha of 10% (both two-sided). Which researcher needs a larger sample if both are to achieve a power of .70?


    1. TRUE: Researcher A
    2. FALSE: Researcher B
    3. FALSE: If both tests expect a similar effect size, they need an equally large sample size needed.
    4. FALSE: Because β\beta for both is .30, they need an equally large sample size.

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