Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-inferential-statistics-42-en_uva-inferential-statistics-42-en
    nameuva-inferential-statistics-42-en
    sectionInferential Statistics
    typeschoice
    solutionFALSE, TRUE, FALSE
    TypeConceptual, Calculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty3.001
    p-value0.3017

    Question

    A number of researchers are interested in decisions based on rational grounds. To this end, they set up a study with two groups who have to choose between two cars (car A and car B): one group of 100 subjects in which one has to decide which car to choose according to of five details (price, color, size, air-conditioning and power steering), and one group of 100 subjects in which one must decide which car they choose based on two data (price and color). In the first group, a proportion of 0.25 chose car A chose and in the second group a proportion of 0.30 chose car A chose. The researchers’ question is whether it matters how much data are given for the choice of car. Tested is the null hypothesis that it does not matter against the alternative hypothesis that the difference in proportions is greater or less than zero. The P-value of this test is


    1. FALSE: 0.0215
    2. TRUE: 0.4296
    3. FALSE: 0.7852

    1. 0.0215: Incorrect
    2. 0.4296: Correct
    3. 0.7852: Incorrect