Exam 1

  1. Metainformation

    Tag Value
    fileDistributions_uva-distribution-621-en_uva-distribution-621-en
    nameuva-distribution-621-en
    sectionDistributions/Continuous/t-distribution
    typeschoice
    solutionFALSE, FALSE, TRUE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2.081
    p-value0.5415

    Question

    A variable A is normally distributed according to N(μ,σ²). We draw a sample of size n from this distribution, with mean x\bar{x} and sd s. Then it follows that the quantity Aμsn\frac{\bar{A}-\mu }{\frac{s}{\sqrt{n}}} the following distribution:


    1. FALSE: N(0,1), the standard normal distribution
    2. FALSE: T[n], the T-distribution with n degrees of freedom
    3. TRUE: T[n-1], the T-distribution with n-1 degrees of freedom
    4. FALSE: N(μ,σ²), the normal distribution with mean μ and variance σ²

    1. N(0,1), the standard normal distribution: Incorrect
    2. T[n], the T distribution with n degrees of freedom: Incorrect
    3. T[n-1], the T distribution with n-1 degrees of freedom: Correct
    4. N(μ,σ²), the normal distribution with mean μ and variance σ²: Incorrect