Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-test-109-en_uva-test-109-en
    nameuva-test-109-en
    sectionInferential Statistics/Parametric Techniques/t-test
    typeschoice
    solutionTRUE, FALSE, FALSE
    TypeCalculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty4.442
    p-value0.0268

    Question

    Researchers are interested in the relationship between problem behavior at school (y) and problem behavior at the nursery (x) of children. After collecting data for 42 children, they calculate they calculate the regression line y = 2 + 3x. They do a test on the slope parameter to establish the relationship between x and y. The standard error of the slope parameter is 1.5 and the number of degrees of freedom with which to test is 40. The null hypothesis states that the slope parameter is 0. This null hypothesis is tested against the alternative hypothesis which states that the slope parameter does not equal 0. The null hypothesis can be


    1. TRUE: Be rejected at significance level 0.10 but not at 0.05.
    2. FALSE: Be rejected at significance level 0.05 but not at 0.01.
    3. FALSE: Be rejected at significance level 0.01.

    1. Are rejected at significance level 0.10 but not 0.05: Correct
    2. Are rejected at significance level 0.05 but not at 0.01.:Incorrect
    3. Are rejected at significance level 0.01.: Incorrect