MEDALS REWARDED!. . Find the exact value of (cos-1) square root of two divided by two.
1 answer:
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Answer:
The point estimate for the population standard deviation of the length of the curtains is 8.58in.
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean and standard deviation
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean
and standard deviation
.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
In this problem, we have that:
The point estimate for the population standard deviation of the length of the curtains is . So
The point estimate for the population standard deviation of the length of the curtains is 8.58in.
Usando proporciones, hay que con 200 pesos mx se pueden comprar 0.0645 yenes.
<h3>¿Qué es una proporción?</h3>Una proporción es una fracción de la cantidad total, y puede ser encontrada por intermedio de una regla de tres.
En este problema, hay que un yene cuesta $0.17, enquanto $1 = 3100 pesos. Por eso, cada yene es equivalente a 3100 pesos.
Por eso, la <em>regla de tres</em> es:
1 yene - 3100 pesos
x yenes - 200 pesos
Aplicando multiplicación cruzada:
Con 200 pesos mx se pueden comprar 0.0645 yenes.
Puede-se aprender más a cerca de proporciones en brainly.com/question/26395519