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andydiaz1227
20.07.2019 •
Mathematics
Apair of fair dice is rolled once. suppose that you lose $8 if the dice sum to 10 and win $11 if the dice sum to 11 or 12. how much should you win or lose if any other number turns up in order for the game to be fair?
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Ответ:
Loss of $ 0.3.
Step-by-step explanation:
Since, when two dices are rolled,
Then the all possible outcomes = 36,
Also, the possible way of getting the sum of 10 are,
(4, 5), (5, 4), (5, 5),
So, the possibility of getting the sum of 10 =![\frac{3}{36}=\frac{1}{12}](/tpl/images/0110/7783/23c06.png)
Now, the possible way of getting the sum of 11 or 12 are,
(5, 6), (6, 5), (6, 6),
So, the possibility of getting the sum of 11 or 12 =![\frac{3}{36}=\frac{1}{12}](/tpl/images/0110/7783/23c06.png)
Now, the possible number of ways of getting other number= 36 - 3 - 3 = 30,
Thus, the possibility of getting other number =![\frac{30}{36}=\frac{5}{6}](/tpl/images/0110/7783/dd03d.png)
Given, for getting the sum of 10 profit is -$ 8, for the sum of 11 or 12 the profit is $11, ( '-' sign shows the loss )
Let x be the profit of getting other number,
So, the expected value of the game =![\frac{1}{12}\times -8+\frac{1}{12}\times 11 + \frac{5}{6}\times x](/tpl/images/0110/7783/d87ca.png)
If the game is fair,
Expected value of game = 0
Hence, there should be a loss of $ 0.3 if any other number turns up in order for the game to be fair.
Ответ:
First off, is your picture REALLY necessary? Whatever haha
A mixed number is just a simplified fraction really.
16/3 = 5 1/3
Hope it helps!
Can you give me brainliest as well please? Thanks ~Samuel