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
Westkost [7]
3 years ago
15

The probability that a certain kind of component will survive a shock test is 3/4. Find the probability that exactly 2 of the ne

xt 4 components tested survive test, assuming tests are independent.
Mathematics
1 answer:
Marina86 [1]3 years ago
3 0

Answer:

Therefore the required probability is =\frac{27}{128}

Step-by-step explanation:

The probability of success is \frac{3}{4}

The number of trial = 4

X= the items survive out of 4

P(x=r)=^nC_rq^{n-r}p^r        p =the probability of success and q = the probability failure.

p=\frac{3}{4}     and q=(1-\frac{3}{4})=\frac{1}{4}

\therefore P(X=2)=^4C_2(\frac{1}{4} )^2(\frac{3}{4} )^2

                  =\frac{4!}{2!2!} (\frac{1}{16} )(\frac{9}{16} )

                  =\frac{27}{128}

Therefore the required probability is =\frac{27}{128}

You might be interested in
What is the square root of 79
andreev551 [17]
79 is a prime, so we cannot reduce it. \sqrt{79} =8.888194417315589
6 0
3 years ago
Read 2 more answers
I will mark brainliest. I need to write a proof for given: <1=<5 prove n||p I completely forgot how to do this and have at
Triss [41]

Answer:

<em><1 = <5 ( because it is a corresponding angle and corresponding angles are always </em><em> </em> <em>equal</em><em> </em><em>)</em>

<em>hope</em><em> </em><em>this</em><em> </em><em>answer</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>you</em><em> </em>

<em>have</em><em> </em><em>a</em><em> </em><em>great</em><em> </em><em>time</em><em> </em>

4 0
3 years ago
Read 2 more answers
The solution to f - (-4) = 12 is f = 8.<br><br><br> True False
amid [387]

Answer:

true

Step-by-step explanation:

as negative takeaway a negative is positive so 8-(-4)= 8+4=12

3 0
2 years ago
Read 2 more answers
What is one third of 75
choli [55]
One third of 75 would be 25 because you divide 75÷3=25
7 0
3 years ago
What is the value of |-7| - |3|
Rudik [331]

Answer:

4 is the correct answer

Step-by-step explanation:

|-7| = 7

|3| = 3

7 - 3 = 4

3 0
2 years ago
Other questions:
  • I need help!!!! 5 (p + 6 ) = 8p
    15·1 answer
  • Use the distributive property to write 23y-(7x-2y)+x without parentheses.
    14·1 answer
  • <img src="https://tex.z-dn.net/?f=8%20%7B%7D%5E%7B2%7D%20%20%2B%2028%20%2B%2024" id="TexFormula1" title="8 {}^{2} + 28 + 24" al
    12·2 answers
  • 4-3+2(x-1) if x = 1<br>Help me plzzzz
    15·1 answer
  • A survey found that 52% of middle school students needed extra help in class.
    15·1 answer
  • Find the slope of the line 6x + 2y=10​
    14·1 answer
  • It is given that set H such that n(H) = x and H has 8 subsets. Determine the value of x.
    5·1 answer
  • Can someone help me “Write a story problem to represent 1/4 divided by 5”
    15·2 answers
  • WILL GIVE BRAINLIEST TO ANSWERER!<br> (3/y-3)=(12/y+3)<br><br> Please help me...
    5·2 answers
  • Is y=3^x a function? why or why not?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!