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Furkat [3]
3 years ago
11

A population of 7000 fish experiences 1,000 deaths in a year. what is the population's death rate for that year?

Mathematics
2 answers:
ICE Princess25 [194]3 years ago
3 0
Rate is the number of death over time. So 1000 divide by 365 days =2.78
Vedmedyk [2.9K]3 years ago
3 0

Answer:

14.29%

Step-by-step explanation:

The death rate for that year will be the year percent decrease in the population of fish.

Initial population of fish = 7000fishes

Death of fish for the year = 1000fishes

death rate for the year = amount of death of fish for that year/initial population of fish × 100%

Yearly death rate = 1000/7000×100%

= 14.29%

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prisoha [69]

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

3 0
3 years ago
Need help ASAP! Giving Brainliest!
allsm [11]

ok thats cool ig what do you need help with

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Hope this helps!
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