Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-elementary-probability-1155-en_uva-elementary-probability-1155-en
    nameuva-elementary-probability-1155-en
    sectionProbability/Elementary Probability
    typeschoice
    solutionTRUE, FALSE, FALSE, FALSE
    TypeConceptual, Calculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    Research shows that 32% of all adults are interested in a trip to Mars. Of these adults, 72% are under the age of 26. As we assume that age and interest are independent of each other are independent, then what is the probability that a randomly selected adult would be both interested in traveling to Mars and is younger than 26?


    1. TRUE: 0,23
    2. FALSE: 0,26
    3. FALSE: 0,28
    4. FALSE: 0,68

    1. 0.23: Correct
    2. 0.26: Incorrect
    3. 0.28: Incorrect
    4. 0.68: Incorrect