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stiv31 [10]
3 years ago
5

How do i calculate a new average with the old average

Mathematics
1 answer:
padilas [110]3 years ago
7 0
Answer: to calculate the new average after then nth number, you multiply the old average by n−1, add the new number, and divide the total by n. In your example, you have the old average of 2.5 and the third number is 10.
Hope this helped!!
Could I get brainliest by chance?!
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solo el 20% de los empleados de la población civil que está en una base militar restringida porta su identificación personal. Si
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
2 years ago
A store is located 10 miles from my house, it takes the average female 20 minutes to talk from the store back to her house. Why
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Answer:

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Step-by-step explanation:

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aleksandr82 [10.1K]

Answer:

the last one

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Step-by-step explanation:

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Whats the equivalent fraction using the multiplier 2. 3/4
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the equivalent fraction is 6/8 is the answer
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