Math
posted by Koia .
Maria is playing a game of chance at the Hibiscus festival, costing $1 for each game. In the game two fair dice are rolled and the sum of the numbers that turn up is found. If the sum is seven, then Maria wins $5. Otherwise Maria loses her money.
a) Construct Maria’s probability distribution for gaining.
b) Find her expected gain.
c) Find the standard deviation for this distribution.

There is already a response to the same question:
http://www.jiskha.com/display.cgi?id=1334845029
Respond to this Question
Similar Questions

Math
Suppose you play a game in which two fair standard dice are rolled. If the numbers showing on the dice are different, you lose $2. If the numbers showing are the same, you win $2 plus the dollar value of the sum of dice. Complete the … 
statistics
A friend offers you the following game: You will roll 2 fair dice. If the sum of the two numbers obtained is 2,3,4,9,10,11,or 12 the friend will pay you $20. However, if the sum of the two numbers is 5, 6,7, or 8, you pay your friend … 
Statistics
For a math assignment we need to design a dice roll game with different expected values of winning. The game should require a player to make a bet on the sum of one roll of two dice. If the dice sum to that number, the player wins; … 
Please can you help me (Probability)
Maria is playing a game of chance at the Hibiscus festival, costing $1 for each game. In the game two fair dice are rolled and the sum of the numbers that turn up is found. If the sum is seven, then Maria wins $5. Otherwise Maria loses … 
math
A pair of dice is rolled once. suppose you lose $9 if the dice sum to 9 and win $11 if the dice sum to 4 or 6. how much should you win or lose if any other number turns up in order for the game to be fair? 
Statistics
In a game you roll two fair dice. If the sum of the two numbers obtained is 3,4,9,10 or 11 you win $20. If the sum is 5,6,7 or 8 you pay $20. However if the scores on the dice are the same no one is required to pay. (a) Construct a … 
Math
At this year's State Fair, there was a dice rolling game. If you rolled two dice and got a sum of 2 or 12, you won $20. If you rolled a 7,you won $5. Any other roll was a loss. It cost $3 to play one game with one roll of the dice. … 
Math
Leah and Sam were playing a game with two dice. They took turns rolling the dice and finding the products of the numbers rolled. To make the game fair, if Leah rolls a certain product she gets 2 points. If Sam rolls a certain product, … 
math
A game is defined by the rules that two dice are rolled and the player wins varying amounts depending on the sum of the two dice rolled based on the following table: Sum 2 3 4 5 6 7 8 9 10 11 12 Winnings … 
data management gr.12
A game is defined by the rules that the die is rolled and the player wins varying amounts depending on the number on the upper face according to the following table: sum 1 2 3 4 5 6 Winnings $10 $9 $8 $7 $6 $5 The cost to play the …