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
katovenus [111]
3 years ago
15

solo el 20% de los empleados de la población civil que está en una base militar restringida porta su identificación personal. Si

llegan 10 empleados, cuál es la probabilidad de que el guardia de seguridad encuentre
Mathematics
1 answer:
prisoha [69]3 years ago
3 0

Usando la distribución binomial, hay una probabilidad de 0.8926 = 89.26% de que el guardia de seguridad encuentre al menos uno en la base militar restringida.

<h3>¿Qué es la distribución binomial?</h3>

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

Los parámetros son:

  • n es el número de ensayos.
  • p es la probabilidad de éxito en un ensayo
  • x es el número de éxitos

En este problema, hay que:

  • 20% de los empleados de la población civil que está en una base militar restringida porta su identificación personal, o sea p = 0.2.
  • Llegan 10 empleados, o sea, n = 10.

La probabilidad de que el guardia de seguridad encuentre al menos uno en la base militar restringida es dada por:

P(X \geq 1) = 1 - P(X = 0)

En que:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{10,0}.(0.2)^{0}.(0.8)^{10} = 0.1074

Por eso:

P(X \geq 1) = 1 - P(X = 0) = 1 - 0.1074 = 0.8926

Hay una probabilidad de 0.8926 = 89.26% de que el guardia de seguridad encuentre al menos uno en la base militar restringida.

Puede-se aprender más a cerca de la distribución binomial en brainly.com/question/25132113

You might be interested in
Eight people were asked what the balance of their checking account at the beginning of this past week was and how much it increa
TEA [102]
Billy because she has has has beginning balance
6 0
3 years ago
Read 2 more answers
PLEASE HELP ME<br><br> but only answer if you're gonna show work thank you!!
rosijanka [135]
The factors of the given expression are x , x - 2 and x - 4

V(x)= x^{3}-  6x^{2}+8x \\  \\ &#10;V(x)=x( x^{2} -6x+8) \\  \\ &#10;V(x)=x( x^{2} -2x-4x+8) \\  \\ &#10;V(x)=x[x(x-2)-4(x-2)] \\  \\ &#10;V(x)=x(x-2)(x-4)

So the expression for height and length are x and x - 4
3 0
4 years ago
Solve the following system of equations. 2x + y = 3 x = 2y - 1 Make sure there are NO SPACES in your answer. Include a comma in
mrs_skeptik [129]

Answer:  x=1;y=1 or (1,1)

Step-by-step explanation:

You can apply the Method of substitution.

Knowing that  x = 2y - 1 (second equation), you can substitute it into the first equation and solve for the variable y:

2x+y=3\\2(2y - 1)+y=3\\4y-2+y=3\\5y=3+2\\5y=5\\y=1

Now you need to substitute y=1 into the second equation x = 2y - 1 to calculate the value of the variable x. Then:

x = 2(1) - 1\\x=2-1\\x=1

Then, the solution is:

x=1;y=1 or (1,1)

5 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST
Ratling [72]

Answer:

I believe the answer is (A)

7 0
3 years ago
20 POINTS IF YOU ANSWER! NEED HELP ASAP
laila [671]

Answer:

They will both have paid the same amount after 4 months

Step-by-step explanation:

Assume that they will pay the same amount after x months

∵ Billy pays $30 for his new phone

∵ He only pays $12.50 each month

→ Find how much he will pay in x month

∴ He will pay → 30 + 12.50x

∵ Annie got her new phone for free

∵ She only pays $20 a month

→ Find how much she will pay in x month

∴ She will pay → 20x

∵ They will pay the same amount

→ Equate their expressions above

∴ 20x = 30 + 12.50x

→ Subtract 12.50x from both sides

∵ 20x - 12.50x = 30 + 12.50x - 12.50x

∴ 7.50x = 30

→ Divide both sides by 7.50

∴ x = 4

∴ They will both have paid the same amount after 4 months

4 0
3 years ago
Other questions:
  • The equation y=45x represents the number of miles, y, Mr. Miller’s car can travel using x gallons of gas. Which data display rep
    13·1 answer
  • Is -4,488/24 positive or negative?
    10·2 answers
  • Gonzalez is wrapping a gift box for his sister's birthday. The box's
    7·2 answers
  • A circle has a radius of 11 cm. What is the approximate area of the circle? Use 3.14 to approximate pi. Write the answer to the
    15·1 answer
  • Days People
    7·1 answer
  • Can someone please help me out? I'd really appreciate it.
    13·2 answers
  • 0.5(12m)-0.5(22n)= <br><br><br><br> Help please
    14·1 answer
  • PLZ HELP ASAP. WILL GIVE BRAINLIEST IF CORRECT
    12·2 answers
  • I need help......................
    8·1 answer
  • HELP ASAP PLS ANSWER THE QUESTION IN THE PIC I GIV BRAINLEST AND LOTS OF POINTS TO CORRECT ANSWER
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!