Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-expected-value-658-en_uva-expected-value-658-en
    nameuva-expected-value-658-en
    sectionProbability/Elementary Probability/Random variables/Expected value
    typenum
    solution0.5
    tolerance0
    TypeCalculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty4.859
    p-value0.0119

    Question

    In korfball, shot percentage is tracked for each player. If John has a shot percentage of 25%, he scores on one out of every four goal attempts. John has two goal attempts. Below is a table, X is chance variable and the number of hits X on these two goal attempts can take the values 0, 1 or 2.

    —— —— —— —— X 0 1 2 probability 0.56 0.38 0.06 —— —— —— ——

    What is the expected score on two goal attempts? Round to two decimal places.


    Solution

    The correct answer is: 0.5