1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vichka [17]
3 years ago
10

You and a friend play a game where you each toss a balanced coin. If the upper faces on the coins are both tails, you win $2; if

the faces are both heads, you win $6; if the coins do not match (one shows a head, the other a tail), you lose $3 (win (−$3)). Calculate the mean and variance of Y, your winnings on a single play of the game. Note that E(Y)> 0. how mucuh should you oay ti okay this game if your net winnings, the difference between the payoff and cost of playing, are to have mean 0?
Mathematics
1 answer:
Kipish [7]3 years ago
3 0

Answer:

E(Y) = $0.5

Var(Y)  = 14.25

you should pay the same amount  $0.5

Step-by-step explanation:

E(Y) =  = Σ(YP)

P = probability of each outcomes.

Var(Y) = ΣY^{2}p − (μ x μ)

E(Y) = (2 x 0.25) +(6 x 0.25) + (0.5 x (-3)) = $0.5

Var(Y) = (2^{2}\\x 0.25) + (6^{2} x 0.25) +(-3^{2} x 0.5) - (0.5^{2})

       = 14.5 - 0.25

Var(Y)  = 14.25

for the difference between the payoff and cost of playing to have mean 0, you should pay the same amount  $0.5

You might be interested in
A cube has a surface area of 54 square centimeters.
umka21 [38]

Answer:

27

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Flying against the wind, an airplane travels 3200 kilometers in 5 hours. Flying with the wind, the same plane travels 6300 kilom
Arisa [49]

Answer:

1300

Step-by-step explanation:

6300

-3200=

1300

 

4 0
2 years ago
Factorise pls<br><br>any inappropriate answers will be reported<br><br><br>thanks xx
Svetradugi [14.3K]
You have to figure out the highest common factor of each set of values:
9a + 21 = 3(3a + 7)
21b - 49 = 7(3b - 7)
54 - 6c = 6(9 - c)
8a + 32b = 8(a + 4b)
4p + 28q + 8r = 4(p + 7q +2r)
84a - 36b -12c = 6(14a - 6b - 2c)
6p + 9q + 15r = 3(2p + 3q + 5r)
18s - 30t + 54u = 6(3s - 5t + 9u)
Hope this helps :)
7 0
3 years ago
What is the GCF of 35,42,38
lbvjy [14]
The greatest common factor (GCF) of 35, 38, and 42 is 1.

There are no common prime numbers, so the GCF is 1.
8 0
3 years ago
-(3-10y) simplify expression pls
Diano4ka-milaya [45]

Answer:

-3+10y

Step-by-step explanation:

Distribute the Negative.

6 0
3 years ago
Read 2 more answers
Other questions:
  • The longest side of an acute triangle measures 30 inches. The two remaining sides are congruent, but their length is unknown. Wh
    11·2 answers
  • During a weekend sale, a store sold 85 DVDs for $19 each. What is the total amount of money, rounded to the nearest hundred, the
    10·1 answer
  • G(x)=3x-2;find g(7)​
    12·2 answers
  • The amount of orange juice in a bottle is modeled by the equation y=128-8x, where y is the number of ounces of juice in the bott
    6·1 answer
  • The side length of an equilateral triangle is 6x -12. Write an expression for the perimeter of the triangle.
    7·1 answer
  • A standard six-sided number cube is rolled and a coin is tossed. What is the probability that the cube shows a 3 or 4 and the co
    9·1 answer
  • Divide.<br><br> 53.4 ÷ 6<br><br> 0.89<br> 8.90<br> 89.00<br> 890.00
    13·2 answers
  • Which statement about these triangles is true? help pls using 40 points
    15·1 answer
  • Pls help. Me I need sum help y’all
    7·2 answers
  • Solve for x. You must show all your work to receive credit.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!