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There is a game called Under-or-Over Seven. A pair of fair dice is rolled once and the resulting sum determines whether the player wins or loses his or her bet. For example, the player can bet $1 that
There is a game called Under-or-Over Seven. A pair of fair dice is rolled once and the resulting sum determines whether the player wins or loses his or her bet. For example, the player can bet $1 that the sum will be under 7 -- that is 2, 3, 4, 5, or 6. For this bet, the player wins $1 if the result is under 7 and loses $1 if the outcome equals to or is greater than 7. Similarly, the player can bet $1 that the sum will be over 7 -- that is 8, 9, 10, 11, or 12. Here the player wins $1 if the result is over 7, but loses $1 if the outcome is 7 or under. A third method of play is to bet $1 on the outcome 7. For this bet, the player wins $4 if the result of the roll is 7 and loses $1 otherwise.
a) Construct the probability distribution representing the different outcomes that are possible for a $1 bet on under 7.
b) Construct the probability distribution representing the different outcomes that are possible for a $1 bet on over 7.
c) Construct the probability distribution representing the different outcomes that are possible for a $1 bet on 7.
