Ratios, Proportions, Percentages, FractionsACT math questions

    2017 December(A10) Math Question 54

    Ratios, Proportions, Percentages, Fractions

    - Mean, Median

    54. At the school carnival, Ann is playing a game involving a stack of 10 index cards. Each card has a single number written on it: 1 card has a 1, 2 cards have a 2, 3 cards have a 3, and 4 cards have a 4. Ann will choose 1 card at random, and she will be awarded the number of points equal to the number written on the card. Let the random variable X represent the number of points Ann receives on any 1 draw. What is the expected value of X?
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