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
Vinil7 [7]
3 years ago
11

Find the probability of exactly three successes in six trials of a binomial experiment in which the the probability of is 50%.

Mathematics
1 answer:
Lyrx [107]3 years ago
4 0

Start by doing the binomial expansion of (x+y)^6 where x represents success. This is

(x^6y^0) + 6(x^5y^1) +15(x^4y^2) +20(x^3y^3) +15(x^2y^4) +6(x^1y^5) +(x^0y^6)

We are interested in the x^3y^3 term which represents exactly 3 sucesses. Since the probalbility of sucess and failure are both .5 we should be able to figure this out just using the coefficients of the terms which is

20/64 = .3125 which is 31.25%

You might be interested in
The equations are given below.
amid [387]

Answer:

neither

Step-by-step explanation:

they are parallel when they have the same slope and perpendicular when the slope is completely different

5 0
2 years ago
Solve 5x – 2y = 11 for y.​
Yuki888 [10]
Answer
42

step by step
5 times 11 - 2 times 11
3 0
3 years ago
Christine is 4 years younger than Mark. 3 years from now, she will be two-thirds as old as Mark find their present ages.Complete
icang [17]

Answer:Mark Is 9 years old; Christine is 5 years old

Step-by-step explanation:

Present age

LET  mark age be x

Christine be x-4 yrs

In 3 yrs Time

Mark will be x+3 yrs old

Christine  will be  (x -4 +3) = x-1 years old

Also, In 3 years time

Christine  = 2/3 Mark

such that

  x-1 = 2/3(x+3)

  x -1= 2x+6 / 3

    3x  -3= 2x+6

      3X--2X = 6+3

         =X=9

Mark Is 9 years old

Christine is   x -4 = 9-4=5 years old

5 0
3 years ago
Write the equation of the line that passes through (0, 3) and is parallel to the line 3x + 5y = 6.
Sunny_sXe [5.5K]
There's more ways than one to solve this, just as there's more ways than one to skin a cat.

Two paralle lines have the same slope, so the desired new line looks exactly like the given line 3x + 5y = 6, except that the constant, 6, is replaced by another value.

Write out 3x + 5y = c
Replace x with 0 and y with 3.  Then 3(0) + 5(3) = c, and c = 15.

Thus, the equation of the new, parallel, line is 3x + 5y = 15.
7 0
3 years ago
Please help me with this as soon as possible. It's due today!
alukav5142 [94]
1-4 are not there but here it is without them

4 0
2 years ago
Read 2 more answers
Other questions:
  • What is the value of d?
    9·2 answers
  • At a sporting good store, the price of a bicycle is $650
    13·1 answer
  • ​(a) The additive inverse of negative two thirds
    6·2 answers
  • A plant grows 3 centimeters in 10 days. How much does it grow per day?
    7·2 answers
  • Help pls ?? anyone ?
    11·1 answer
  • 3(2x-1) what is the anwser to this
    8·1 answer
  • How do I solve this
    15·1 answer
  • I need help with this problem. please help.
    6·1 answer
  • Find the distance between (-2,5) and (4,3).
    14·1 answer
  • If two lines are perpendicular, then they form right angles. If two lines meet at 90 angles. then they are perpendicular. Two li
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!