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
djyliett [7]
3 years ago
14

6. An urn contains 15 red balls and 8 blue balls. In each draw, one ball is extracted at random. It is then returned to the urn,

along with 6 extra balls of the same color. (the total number of balls in the urn increases after each draw). Consider the event Ck={a blue ball is extracted at the k-th draw}. Determine the probability P(C4). (at the first three draws the extracted balls are not blue).
Mathematics
1 answer:
Leviafan [203]3 years ago
8 0

Answer:

P(C4) = 0.0711

Step-by-step explanation:

consider the first draw = 15/23  since it cannot be a blue ball

The second draw = 21/29 since 6 more red balls will be added after the draw since a blue ball cannot be drawn

the third draw = 27/35 since 6 more red balls will be added after each draw since a blue ball cannot be drawn

therefore the total number of red balls will be = 15 + 6 + 6 + 6 = 33 red balls after the 4th draw. the total ball now in the urn= 33 red + 4 blue = 41

Hence the probability of drawing a blue ball at the fourth draw after drawing red balls at the previous attempts = 8/41

P(C4) = P ( fourth ball is blue ) * P( first ball red)*P(second ball red) *P(third ball red )

= (8/41) * (15/23) * (21/29)* (27/35) = 0.0711

You might be interested in
In simplest form what is 2/7 + 2/5
Len [333]

24/35.................

3 0
2 years ago
Peter bought 5.65 lbs of hamburger meat to make meatballs write 5.65 as a mixed number
butalik [34]

The total would be 5 13/20 or 113/20

4 0
3 years ago
Which fractions are equivalent to 7/6? Select all that apply.
Mazyrski [523]

Answer:

C and D are equivalent.

Step-by-step explanation:

if you multiply 7/6 both by 2 it will =14/2 and also if you multiply 7/6 both by 10 you will get 70/60.

4 0
2 years ago
50 ÷ (-5) =<br><br><br> Please simplify
mafiozo [28]

Answer:

-10

Step-by-step explanation:

50 ÷ (-5)

First ignore the brackets and the negative sign.

Then divide 50 by 5 to get 10

Then return the negative sign so the answer is; -10

3 0
3 years ago
Write an algebraic expression to represent each scenario.<br><br> Part A: “the sum of 6 and y”
Nostrana [21]

Answer:

6 + y

Step-by-step explanation:

Here, we want to write an algebraic expression to represent the situation

Mathematically, we want to add 6 and y

The algebraic expression will be;

6 + y

3 0
3 years ago
Other questions:
  • Does anyone understand with work ? Please help me
    11·2 answers
  • EASY GEOMETRY**<br>name an acute angle on the figure​
    14·2 answers
  • Find the nonpermissible replacement for n in this expression -2/5n
    6·1 answer
  • Find the value of x ​
    11·1 answer
  • 40% of the cost was tax. if the taxes paid were $15,000, what was the total cost of the car?
    7·1 answer
  • The segments shown below could form a triangle.​
    13·2 answers
  • HELP PLEASE IM STRUGGLING
    11·1 answer
  • Which expression is represented by this model?
    6·1 answer
  • Using the equation y = 8x , what would y be if x = 2
    14·2 answers
  • Find the volume of the cylinder. Round your answer to the nearest tenth. 15 cm The volume of the cylinder is about cubic centime
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!