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3 years ago

Half the difference between two numbers is 8. The average of the numbers is 12. Find the

2 answers:

6 0

Half the difference is 8 so that means the difference is 16, the average is 12 so 12 is directly in between the two numbers.

The answer is 4 and 20
Hope this helps

coldgirl [10]3 years ago

5 0

Yeah what YeetBoi said :)
Have a great day! :)

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Una familia ha consumido en un día de verano: dos botellas de litro y medio de agua, 5 botellas de 1/4 de litro de jugo de manza

Natalija [7]

Answer:

La familia bebió:

2 botellas de 1.5 L = 2*1.5L = 3L

5 botellas de 1/4 de litro = 5*(1/4 L) = 5/4 L

4 botellas de 1/4 de litro = 4*(1/4 L) = 1 L

Sumando eso, tenemos:

3 L + (5/4) L + 1L = 4L + 5/4 L = (16/4) L + 5/4 L = (21/4) L.

21/4 Litros tomaron en total.

¿podemos directamente sumar y restar fracciones de distintos denominadores?

No, tenemos que tener el mismo denominador para sumar o restar.

5 0

3 years ago

Suppose that Y1, Y2,..., Yn denote a random sample of size n from a Poisson distribution with mean λ. Consider λˆ 1 = (Y1 + Y2)/

Burka [1]

Answer:

The answer is " $\bold{\frac{2}{n}}$ ".

Step-by-step explanation:

considering $Y_1, Y_2,........, Y_n$ signify a random Poisson distribution of the sample size of n which means is λ.

$E(Y_i)= \lambda \ \ \ \ \ and \ \ \ \ \ Var(Y_i)= \lambda$

Let assume that,

$\hat \lambda_i = \frac{Y_1+Y_2}{2}$

multiply the above value by Var on both sides:

$Var (\hat \lambda_1 )= Var(\frac{Y_1+Y_2}{2} )$

$=\frac{1}{4}(Var (Y_1)+Var (Y_2))\\\\=\frac{1}{4}(\lambda+\lambda)\\\\=\frac{1}{4}( 2\lambda)\\\\=\frac{\lambda}{2}\\$

now consider $\hat \lambda_2$ = $\bar Y$

$Var (\hat \lambda_2 )= Var(\bar Y )$

$=Var \{ \frac{\sum Y_i}{n}\}$

$=\frac{1}{n^2}\{\sum_{i}^{}Var(Y_i)\}\\\\=\frac{1}{n^2}\{ n \lambda \}\\\\=\frac{\lambda }{n}\\$

For calculating the efficiency divides the $\hat \lambda_1 \ \ \ and \ \ \ \hat \lambda_2$ value:

Formula:

$\bold{Efficiency = \frac{Var(\lambda_2)}{Var(\lambda_1)}}$

$=\frac{\frac{\lambda}{n}}{\frac{\lambda}{2}}\\\\= \frac{\lambda}{n} \times \frac {2} {\lambda}\\\\ \boxed{= \frac{2}{n}}$

8 0

3 years ago

The cost of 6 team sweatshirts is $84.

oksian1 [2.3K]

Answer:

336

Step-by-step explanation:

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3 years ago

FREE BRAINLIEST!! ill also answer questions that you have posted if you answer correctly!!!! (32pts)

OlgaM077 [116]

Answer:

there is enough info to determine the figure... also the answer is D Hope this helps

Step-by-step explanation:

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3 years ago

Peaches are being sold for $2 per pound. If x represent the number of pounds of peaches bought and y represent the total cost of

Hitman42 [59]

Answer:

y = 2x

x = 1/2*y

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4 years ago

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