Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-inferential-statistics-61-en_uva-inferential-statistics-61-en
    nameuva-inferential-statistics-61-en
    sectionInferential Statistics
    typeschoice
    solutionTRUE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty0.791
    p-value0.8953

    Question

    A researcher conducts an experiment in which he expects a difference in average performance on a given task between conditions. He tests his results using a t-test and finds a p-value that is less than the nominal significance level of .05. Why does this statistical result not mean that the research hypothesis is definitely true?


    1. TRUE: A type I error may have been made.
    2. FALSE: A type II error may have been made.
    3. FALSE: There may be a lack of “power.”

    1. There may be a Type I error…: Correct
    2. A type II error may have been made…: Incorrect
    3. There may have been a lack of “power”…: Incorrect