Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_vufsw-confidence_interval-1280-en_vufsw-confidence_interval-1280-en
    namevufsw-confidence interval-1280-en
    sectioninferential statistics/regression/confidence interval
    typeschoice
    solutionTRUE, FALSE, FALSE, FALSE, FALSE
    Typetest choice
    ProgramNA
    LanguageEnglish
    Levelstatistical literacy

    Question

    A teacher is interested in the effect of the number of study hours (HOURS) on the score on a specific test (SCORE). He carries out a regression with these two variables and with a random sample of 160 students.

    This leads to the following regression equation: SCORE = 2.30 + 0.80 * HOURS.

    The teacher wants to conclude that HOURS have a positive effect on SCORE. He runs a two-sided test with a significance level of 5% (α = 0,05). What does he need to test exactly?


    1. TRUE: He should test whether the value of 0.80 differs significantly from 0.00.
    2. FALSE: He should test whether the value of 0.80 differs significantly from 0.05.
    3. FALSE: He should test whether the value of 0.80 differs significantly from 0.025.
    4. FALSE: He should test whether the value of 0.80 differs significantly from 0.95.
    5. FALSE: HiHe should test whether the value of 0.80 differs significantly from 1.96.

    1. True
    2. False
    3. False
    4. False
    5. False