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Eva8 [605]
3 years ago
11

Ayudenmee plis

Mathematics
1 answer:
inessss [21]3 years ago
7 0

Answer:

El intervalo, con un nivel de confianza de 99%, para estimar el sueldo medio poblacional de los trabajadores es de ($1807, $2193).

Step-by-step explanation:

El primero paso es el encuentro de lo \alpha, que es la subtracion de 1 por lo nivel de confianza e divididos por 2. Entonces:

\alpha = \frac{1 - 0.99}{2} = 0.005

Ahora, buscamos a z en la tabela Z de manera que z tienga uno p-value de 1 - \alpha.

Entonces, z con uno p-value de 1 - 0.005 = 0.995, o sea, z = 2.575.

La margen de error es:

M = z\frac{\sigma}{\sqrt{n}}

En que \sigma es la desviación estándar y n es el tamaño de la muestra.

σ=$600. Si se tomó una muestra de 64 trabajadores

Entonces \sigma = 600, n = 64

Margen de error:

M = z\frac{\sigma}{\sqrt{n}}

M = 2.575\frac{600}{\sqrt{64}}

M = 193

El limite inferior es la subtración de la media de la muestra por la margen de error. Entonces 2000 - 193 = $1807.

El limite inferior es la suma de la media de la muestra con la margen de error. Entonces 2000 + 193 = $2193.

El intervalo, con un nivel de confianza de 99%, para estimar el sueldo medio poblacional de los trabajadores es de ($1807, $2193).

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If ΔPQR ≅ ΔJKL and ∠P = 35º, then which other angle also equals 35º. a ∠J b ∠K c ∠L d None of these choices are correct.
aivan3 [116]

Answer:

A: Angle J

Step-by-step explanation

If the two triangles are congruent then their corresponding angles are also congruent. This means that angle P is congruent to angle J, angle Q is congruent to angle K and angle R is congruent to angle L. Hope this helps :D

3 0
3 years ago
Can somebody please help me i need this urgently.
sukhopar [10]

Answer:

multiple choice is worth 2

short response is worth 4

Step-by-step explanation:

23x + 10y = 86

28x + 5y = 76

solve by elimination

multiply the top by -1 and the bottom by 2

-23x + -10y = -86

56x + 10y = 152

add them

33x = 66

x = 2

with x = 2 plug x into one of the equations

23x + 10y = 86

23(2) + 10y = 86

46 + 10y = 86

10y = 40

y = 4

x = 2 and y = 4 so

multiple choice is worth 2

short response is worth 4

6 0
2 years ago
Thank you guys fir the help
Lubov Fominskaja [6]
The correct answer to that would be b
4 0
3 years ago
Please help me solve for x
kkurt [141]

\qquad \qquad\huge \underline{\boxed{\sf Answer}}

The shown pair of angles are Co interior angle pair, therefore the sum of those angles is 180°

\qquad \sf  \dashrightarrow \: 130 \degree + 7x + 1 \degree = 180 \degree

\qquad \sf  \dashrightarrow \: 131 \degree + 7x = 180 \degree

\qquad \sf  \dashrightarrow \:  7x= 180 \degree - 131 \degree

\qquad \sf  \dashrightarrow \:  7x= 49 \degree

\qquad \sf  \dashrightarrow \:  x=49 \degree \div 7

\qquad \sf  \dashrightarrow \:  x=7 \degree

The required value of x is 7°

3 0
3 years ago
Read 2 more answers
A-t shirt cost $4 a sweter cost 4 times as much as the t-s
slava [35]
T-shirt costs $4
Sweater costs $4(4)

Sweater costs 4 x 4

4 x 4 = 16

Sweater costs $16 

hope this helps
5 0
4 years ago
Read 2 more answers
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