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
sukhopar [10]
3 years ago
14

En una olimpiada matemática, cada estudiante recibe un punto por cada pregunta acertada. En la siguiente tabla de frecuencias se

muestra la clasificación de la cantidad de estudiantes de acuerdo con su puntaje obtenido. ¿Cuál es la probabilidad de seleccionar aleatoriamente un participante que haya obtenido entre 71 y 85 puntos?
Mathematics
1 answer:
Leviafan [203]3 years ago
4 0

La tabla relacionada con la pregunta se puede encontrar en la imagen adjunta a continuación:

Responder:

70%

Explicación paso a paso:

probabilidad de seleccionar aleatoriamente a un participante que haya obtenido entre 71 y 85 puntos:

Probabilidad = resultado requerido / Total de resultados posibles

Resultados posibles totales = Sumando la frecuencia para obtener el número total de estudiantes = (9 + 12 + 12 + 18 + 9) = 60 estudiantes

Resultado requerido:

Clase :

(71 - 75) = frecuencia = 12

(76 - 80) = frecuencia = 12

(81 - 85) = frecuencia = 18

Total = (12 + 12 + 18) = 42 = resultado requerido

Por tanto, P = 42/60 = 0,7 = (0,7 * 100%) = 70%

You might be interested in
How to find the all 4 angles of a trapezoid given only the side lengths
Lady_Fox [76]

Answer:

you have to add together all the numbers you where given then divide

Step-by-step explanation:

3 0
3 years ago
0.4(2-0.5) = 0.2(1 + 3)<br> Help me
Lina20 [59]

Answer:

0.6 = 08

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
For a specific species of fish in a pond, a wildlife biologist wants to build a regression equation to predict the weight of a f
sashaice [31]

Answer: First of all, we will add the options.

A. Yes, because 3 inches falls above the maximum value of lengths in the sample.

B. Yes, because the regression equation is based on a random sample.

C. Yes, because the association between length and weight is positive.

D. No, because 3 inches falls above the maximum value of lengths in the sample.

E. No, because there may not be any 3-inch fish of this species in the pond.

The correct option is D.

Step-by-step explanation: It would not be appropriate to use the model to predict the weight of species that is 3 inches long because 3 inches falls above the maximum value of lengths in the sample.

As we can see from the question, the model only accounts for species that are within the range of 0.75 to 1.35 inches in length, and species smaller or larger than that length have not been taken into consideration. Therefore the model can not be used to predict the weights of fishes not with the range accounted for.

3 0
3 years ago
Mike bought five items for lunch that cost a total of $4.55. Hot dogs cost $1.10 each and cookies cost $0.75 each. Which of thes
Setler79 [48]

Answer:

1.1h+0.75c=4.55---------------1

h+c=5--------------2

Step-by-step explanation:

Step one:

given data

total lunch items= 5

let hot dogs be h

and cookies be c

cost of hot dogs = $1.10

cost of cookies = $0.75

total cost = $4.55

Step two:

The linear model for the total cost is given as

4.55=1.1h+0.75c---------------1

and the model for the number of items is

h+c=5--------------2

The systems of the equation for the situation is

1.1h+0.75c=4.55---------------1

h+c=5--------------2

6 0
3 years ago
miles has 24 baseball cards. he wants to display the cards in even rows. 2 different arrays to show how miles could display his
Anna11 [10]
SSjsjsndjsajjsjdisjjshdjdnd
4 0
3 years ago
Read 2 more answers
Other questions:
  • Andrew is at point A. A deer is 3km directly north of Andrew, at point D. Brian is 1.8 km due west of Andrew at point B. Calcula
    5·1 answer
  • If 3 is added to twice a number and this sum is multiplied by 6​, the result is the same as if the number is multiplied by 5 and
    5·1 answer
  • The class is planning a party the pizza restaurant cuts each pizza into 8 slices there are 32 students how many pizzas does ther
    13·1 answer
  • 20 points!
    14·2 answers
  • Two northern towns are at record low temperatures. One is at -13 degrees and the
    12·1 answer
  • PLS ANYONE HELP ME!!<br><br> Write an equation for 96% of what number is 24?
    5·1 answer
  • You rent an apartment that costs $1300 per month during the first year, but the rent
    9·1 answer
  • Write the equation of the line perpendicular to y =5/6x+1/6 that passes through the point (-9,3)
    8·1 answer
  • If the weight of a package is multiplied by 5/6 the result is 50 pounds. Find the weight of the package.
    15·1 answer
  • What two numbers multiply together to give me -21 and add together to give me 4?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!