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
igomit [66]
3 years ago
14

A jar has 10 red marbles, 6 purple marbles, and 4 turquoise marbles. If you pull a red marble, you win nothing. If you pull a pu

rple marble, you win $2; and if you pull a turquoise marble, you win $5. It costs $3 to play. What is the expected value?
Mathematics
1 answer:
Klio2033 [76]3 years ago
8 0

Answer:

The expected value = -1.4 Dollars

Step-by-step explanation:

The number of red marbles = 10

The number of red purple = 6

The number of red turquoise = 4

The total number of marbles in the jar = 10 + 6 + 4 = 20 marbles

The prize won for pulling a red marble = 0

The prize won for pulling a purple marble = $2

The prize won for pulling a turquoise marble = $5

The probability of pulling a red marble = 10/20 = 1/2

The probability of pulling a purple marble = 6/20 = 3/10

The probability of pulling a turquoise marble = 4/20 = 1/5

Expected value, EV, probability is the foreseen or bankable future value value for a current investment. The expected value is found by finding the product of each outcome and the probability of occurrence of the outcome and then adding the values of the products together

To find the expected value, EV sum the prizes won multiplied by the probability of winning that prize and then subtract the cost of playing the game.

Therefore;

EV = 1/2×0 + 3/10×2 + 1/5 × 5 -3 = -1.4

The expected value = $(-1.4).

You might be interested in
Solve this exponential function 5^3m=125
Arlecino [84]

Answer:

m would be 1

Step-by-step explanation:

5^3 is 125 so it would be 1. I am pretty sure. Sorry if Im wrong!

8 0
3 years ago
There is $2,134 in a savings account. If next year the money is two times as much, what is the total amount in the savings accou
Dafna1 [17]

Hello!

To find our answer, we just multiply by 2.

2,134(2)=4,268

Therefore, there would be $4,268.

I hope this helps!

6 0
3 years ago
Read 2 more answers
The B-Clean Car Wash washed 128 cars in the 3 hours. At that rate how many cars can they wash in 8 hours? use a proportion.
krok68 [10]

128 : 3 :: w : 8 proportion

3w = (8)(128) product means/extremes

w = 341 ⅓ cars

7 0
3 years ago
What's the difference between a function and not a function
Ipatiy [6.2K]

I hope it helps......:))

3 0
2 years ago
Read 2 more answers
Multiply out the brackets:<br>(m + 2) (m - 2)​
kramer

Answer:

(m+2)(m-2)=m^2-4

Step-by-step explanation:

(m+2)(m-2)=m(m-2)+2(m-2)

=m^2-2m+2m-4

=m^2-4

6 0
3 years ago
Read 2 more answers
Other questions:
  • Find the value of x. A. 3 B. 2 C. 5 D. 6
    12·2 answers
  • I need to know what is 1/9 of 27
    7·2 answers
  • Find the slope......
    6·1 answer
  • What are the key features of a graph of a quadratic equation with only complex solutions
    11·1 answer
  • The owner invested personal equipment in the business. To record this transaction,
    10·1 answer
  • Using the Pythagorean Theorem, give an example of three sides of a right triangle
    9·1 answer
  • When you find 420% of 85, what are you looking for? Are you looking for the percent, the part, the whole or a ratio
    12·1 answer
  • B • (9-b) •b<br>(b=9) help now please I'm failing​
    11·2 answers
  • Find the slope of 12x-3y=6
    10·1 answer
  • What is the area of this trapezoid? units 2
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!