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
seraphim [82]
2 years ago
6

URGE

Mathematics
1 answer:
lina2011 [118]2 years ago
7 0

Answer:

La probabilidad de que el estudiante entre, es 0.7

Entonces la probabilidad de que el estudiante no entre, es 1 - 0.7 = 0.3.

Ahora, si de 5 estudiantes, 3 entran y 2 no, entonces la probabilidad para un dado arreglo es: 0.7 tres veces, y 0.3 dos veces.

Y la probabilidad conjunta es igual al producto de las probabilidades individuales.

P = (0.7^3)(0.3^2)

Pero esto es para un arreglo, tenemos que tener en cuenta las permutaciones.

Sabemos que para M elementos, el numero de diferentes arreglos de N elementos (tal que N ≤ M) es:

C(M, N) = \frac{M!}{(M - N)!*N!}

En este caso, tenemos que M = 5 y N = 3, entonces tenemos:

C(5, 3) = \frac{5!}{2!*3!}  = 5*4/2 = 10

Entonces la probabilidad va a ser:

P = 10* (0.7^3)(0.3^2) = 0.3087

You might be interested in
Simplify (5+11i) - (16-4i) +9i.
lisabon 2012 [21]

Answer:

5+11i-16-4i+9i

5-16+11i-4i+9i

-11+7i+9i

-11+16i

Step-by-step explanation:

First, get the like terms together. Then add or subtract until its simplified. Simplified is -11+16i.

6 0
2 years ago
Read 2 more answers
Solve please, Thanks.
nataly862011 [7]

Answer:

i dont get it

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Need help on this one please
SVETLANKA909090 [29]

Answer:

DFG

Step-by-step explanation:

It is a right triangle, and so is DEF. Thus they are similar.

4 0
2 years ago
18 divided by 2 equals 9 because
coldgirl [10]

Answer:

anwer a

2 times 9 equals to 18

5 0
3 years ago
Read 2 more answers
A table of x and y values is shown. what is the ratio of y to x in the table?
galben [10]

Answer:

you didnt add a photo, we cant help you

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • What is 23 divided by 19,386
    9·2 answers
  • Make y the subject of the formula:A = xy + yz
    12·1 answer
  • Write the equation of a line that goes through point (0, -8) and has a slope of 0
    7·1 answer
  • PLEASEEE HELP ME ANSWER THIS QUESTION!!!!!
    13·1 answer
  • What is 2 divided by 9.40
    13·2 answers
  • A mackerel swam at a steady speed for 22seconds. It swam 682centimeters in that time. What was its speed?
    5·1 answer
  • Real life problem for (-10+-2)=12
    11·1 answer
  • What quantity of 75 per cent acid solution must be mixed with a 30 per cent solution to produce 1080 mL of a 50 per cent solutio
    11·1 answer
  • What is the value of k
    11·1 answer
  • To visit the top of the Empire State Building, a ticket cost $ 4.00 in 1999. In 2009, the price rose to $ 20.00. What was the pe
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!