Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-general-rules-1157-en_uva-general-rules-1157-en
    nameuva-general-rules-1157-en
    sectionProbability/Elementary Probability/General Rules
    typeschoice
    solutionTRUE, FALSE, FALSE, FALSE
    TypeConceptual, Calculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    Research shows that 22% of all adults are interested in a trip to Mars. Of these adults, 75% are under the age of 26. As we assume that age and interest are independent of each other are, what is the probability that a randomly selected adult will be someone is someone who wants to go to Mars and is older than 26?


    1. TRUE: 0,06
    2. FALSE: 0,17
    3. FALSE: 0,22
    4. FALSE: 0,25

    1. 0.06: Correct
    2. 0.17: Incorrect
    3. 0.22: Incorrect
    4. 0.25: Incorrect