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
ELEN [110]
3 years ago
15

A jar contains four red marbles and six green marbles. You randomly select a marble from the jar, with replacement. The random v

ariable represents the number of red marbles. What is the probability of getting exactly two red marbles out of four trials?
Mathematics
1 answer:
ioda3 years ago
3 0

Answer:

The probability of getting exactly two read marbles is P = 0,003456%

Step-by-step explanation:

So, each of the following sequences are the desired results(I will use R for a red marble and G for a green marble).

S(1) = R-R-G-G

S(2) = R-G-R-G

S(3) = R-G-G-R

S(4) = G-R-R-G

S(5) = G-R-G-R

S(6) = G-G-R-R

In all, considering there are replacement, there can be 10*10*10*10 = 10000 total sequences, so the probability of getting exactly two read marbles is

P = \frac{P(S(1)) + P(S(2)) + P(S(3)) + P(S(4)) + P(S(5)) + P(S(6))}{10000}

where

P(S(1)) = P(S(2)) = P(S(3)) = P(S(4)) = P(S(5)) = P(S(6)) = (0.4)^{2}*(0.6)^{2} = 0.16*0.36 = 0.0576.

The probability of getting exactly two read marbles is

P = \frac{6*0.0576}{10000} = 0,003456%

You might be interested in
What is 3(15-6)+(18-12)exponet 2
Alenkasestr [34]
3 (15-6)+(18-12)^2=
3 (9) + (6)^2=
27 + 36 =

63
3 0
3 years ago
Read 2 more answers
What 3.28 divide 9.84=
allsm [11]
Hello!if you mean 3.28 divided by 9.84 then the answer is 0.33333333 and so on
7 0
3 years ago
Next telephone company charges $0.07 Per minute for a weekend calls and $0.09 Per minute for calls made on weekdays. This month
mr Goodwill [35]
You should suck a long rod and the answer is around 50 minutes
8 0
3 years ago
Will give Brainliest if you answer all
oee [108]
What grade are you in so I know what level you are on to help
7 0
3 years ago
Joe is saving money for his
tatyana61 [14]

Answer:

He will need to save $295

Step-by-step explanation:

he needs 450 and he has 155, so all you would do is subtract 155 from 450 and you get the rest he needs which is 295

6 0
2 years ago
Other questions:
  • Help me please!! on the puzzle please
    12·1 answer
  • (x + 5)(5 + x)<br> is this a perfect square
    15·2 answers
  • What are the prime number under 10
    14·1 answer
  • Discrete and continuous random variables
    11·1 answer
  • (+50)x(-10)<br><br> Respuesta, explicación, operación completa
    6·1 answer
  • Plz help me with this question <br> 15 pt
    11·1 answer
  • What is the algebraic nature of the function f(x)= x2 -6X+5<br>​
    6·1 answer
  • 2) Mass of the earth is 5976000000000000000000000 kg and that of Uranus is 86800000000000000000000000 kg , which one has greater
    6·2 answers
  • An equation is shown
    9·1 answer
  • What is the Y and x intercept of 9X-6Y= 72
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!