Mathematics College

A company has offices in two different countries. Suppose that the average age (in years) of the employees at location A is 40.140.140, point, 1 with a standard deviation of 5.55.55, point, 5, and the average at location B is 36.736.736, point, 7 with a standard deviation of 6.36.36, point, 3.
Every month, the company takes separate random samples of 505050 employees from each location for a survey. Each time, they look at the difference in the mean age sampled from each location \left( \bar{x}_\text{A} - \bar{x}_\text{B} \right)(
x
ˉ

A
​
−
x
ˉ

B
​
)left parenthesis, x, with, \bar, on top, start subscript, start text, A, end text, end subscript, minus, x, with, \bar, on top, start subscript, start text, B, end text, end subscript, right parenthesis.
What do we know about the shape of the sampling distribution of \bar{x}_\text{A} - \bar{x}_\text{B}
x
ˉ

A
​
−
x
ˉ

B
​
x, with, \bar, on top, start subscript, start text, A, end text, end subscript, minus, x, with, \bar, on top, start subscript, start text, B, end text, end subscript, and why?

Answers

Answer 1

Answer:

It's approximately normal, because both sample sizes are at least 303030.

Step-by-step explanation:

Khan Academy

Related Questions

4 = x + 12 PLEASE HELP QUICK

Answers

Answer:

x= -8

Step-by-step explanation:

Move the terms

Calculate: -x=12-4 = -x=8

Change the signs

Here are the ages of 14 adults.

42
35
56
39
40
51
47
38
42
55
42
48
49
41

Draw an ordered stem and leaf diagram for these ages.

Answers

Answers

Step-by-step explanation:

6 divided by 2^5 (9x4-5^5+8)

Answers

Answer:

577.6875

Step-by-step explanation:

(6 / (2^5)) * ((9×4) - (5^5) + 8) = 577.6875

Please guys, can someone help me out?

Answers

Center point= 8 , 3
radius =7 Good luck!

5 books cost $15. How much do 7 books cost?

Answers

5 / 15 = 3

So 3 x 7 = 21
ANSWER:
$21

STEP BY STEP:
Each book is 3 dollars, so we multiply 7 by 3, and you get 21.

hope this helps

Find the slope of the line containing the given pair of points. If the slope is​ undefined, state this. (-8,0) and (4,0)

Answers

Answer:

The slope is 0

Step-by-step explanation:

Given

[tex](x_1,y_1) = (-8,0)[/tex]

[tex](x_2,y_2) = (4,0)[/tex]

Required

The slope (m)

This is calculated as"

[tex]m=\frac{y_2-y_1}{x_2 - x_1}[/tex]

[tex]m=\frac{0-0}{4 -(-8)}[/tex]

[tex]m=0[/tex]

The slope is 0

Which of the following are compound events in which the results of one event affect the likelihood of the other event? PLZ HELP ASAP
Answers: 1. independent events
2. dependent events
3. theoretical events
4. fair events

Answers

Answer:

2. Dependent events

Step-by-step explanation:

hi please help!!! i’ll give you a brainless answer (question in picture)

Answers

Answer:

Oh easy here is the answer m=21

The answer is D. 21


In a survey at a local university, 61% of students say that they get less than the recommended eight hours of sleep per night. In a group of 2700 students, how many would you expect get eight
students get eight or more hours of sleep per night.

Answers

Oggga bookgaaa shshsggazbzghshs

How many samples of size 2 can be formed from population of size 5

Answers

Answer:

2

Step-by-step explanation:

Multiply and then simplify completely: ( 8 + √ 10 ) ( 8 − √ 10 )

Answers

Answer:

54.

Step-by-step explanation:

( 8 + √ 10 ) ( 8 − √10)

= 8*8  - 8√10 + 8√10  +√10 *  -√10

= 64 -  8√10 + 8√10 - 10

The 2 middle turns cancel out so we have:

64 - 10

= 54.

What is the slope of line m?
On a coordinate plane, a straight line goes through (negative 2, 1), (0, 0), and (2, negative 1).

Answers

Given:

A straight line goes through (-2,1), (0,0), and (2,-1).

To find:

The slope of the given line.

Solution:

Slope formula

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

Consider any two points from the given points.

The line goes through (-2,1) and (0,0). So, the slope of the line is

[tex]m=\dfrac{0-1}{0-(-2)}[/tex]

[tex]m=\dfrac{-1}{2}[/tex]

Therefore, the slope of the line is [tex]m=-\dfrac{1}{2}[/tex].

Answer:

its 2/3

Step-by-step explanation:

Story Problem:
Avery purchased 4 tacos and 2 burritos and her total cost was $21. Sasha purchased 4 tacos and 3 burritos
and her total cost was $26.50. What is the price of one burrito?

Answers

Answer:

Step-by-step explanation:

Let tacos be x and burritos be y

So, Avery purchased 4x+2y = 21

Sasha purchased 4x+3y = 26.5

Solving the 2 eqns:

4x+2y=21

-4x-3y=-26.5

-y=-5.5

The cost of one burrito is $5.5

PLEASE HELP ACELLLUS

Answers

9514 1404 393

Answer:

  (-2)

Step-by-step explanation:

Put the point values in the given equation to see what the missing number is.

  y = 1/2x + (_)

  2 = 1/2(8) + (_) . . . . . substitute the given values

  2 = 4 + (_) . . . . . . . .  simplify

  -2 = (_) . . . . . . . . . . . subtract 4

The green ? should be filled with -2.

find the least-squares regression line treating the FICO score, x, as the explanatory variable and the interest rate, y, as the response variable

Answers

Answer:

ŷ = -0.07637X + 61.36874

Step-by-step explanation:

Score, x :

545

595

640

675

705

750

Interest %, y:

18.982

17.967

12.218

8.612

6.680

5.150

Using the ordinary least square regression calculator :

The equation of best fit obtained is :

ŷ = -0.07637X + 61.36874

Slope = - 0.07637 (depicts a negative relationship between the variables).

Intercept = 61.36874

Score, X = explanatory variable ; Interest rate, Y = response variable

Find the equation of this line.
Simplify the fractions.

Answers

Answer:

Step-by-step explanation:

Where's the line?

Answer all of these please

1.The product of a number and seven more than the number

2.The product of a number and seven less than the number

3.Eight less than twice a number is fourteen.

4.One less than three times a number is seven.

5. Four more than five times a number is two less than the number.

6.Ten less than a number is three more than six times the number.

7.Twice the sum of a number and 3 is 20.

Answers

Answer: 3. 22-8 / 4. 2x3.5 / 5.

Step-by-step explanation:

Step-by-step explanation:

1. 1×8=8

2. 9×2=18

3. 8+14=22÷2=11

4. 2.7

5. -1.5

6. closest -2.5

7.÷2=10-3=7

Consider the figure shown below. What is the value of the angle x?

x = _______ degree. ​

Answers

X=66 degrees. Because of corresponding alternate interior angles. Interior angles of triangle is 180 degrees

Six more than five times a number

Answers

Answer:

? = 5n + 6

Explanation:

Answer:

5x + 6

Step-by-step explanation:

Let the number = x. 5 times x = 5x. So, the equation 5x + 6.

what is 261.8 rounded to the nearest tenth
is it 261.80?​

Answers

It is already 261.8. tenths place is one digit after the decimal.

Joachim has as many marbles as Leanne. Leanne has as many marbles as Alex. If Alex has
36 more marbles than Joachim, how many marbles do they have altogether?

Answers

Answer:

76

Step-by-step explanation:

Five adult tickets and three child tickets for a movie cost £58.
Two adult tickets and eight child tickets for a movie cost £47.
Find the cost of each type of ticket.

Answers

Answer:

Step-by-step explanation:

Answer:

so for the first one the cost for all the tickets is 412

for the last one the cost is 333

Step-by-step explanation:

Divide the given polynomial by the given monomial.​

Answers

Answer:

Looks like all of your questions have been answered.

Expand and simplify (x-3)(x+5)

Answers

How to solve your problem
(

−
3
)
(

+
5
)
Simplify
1
Distribute
(

−
3
)
(

+
5
)

(

+
5
)
−
3
(

+
5
)

Answer:

^2 + 2x-15

Hope this helps

Please help it’s for homework

Answers

Slope is 5
Y intercept is -8
y = 5x - 8
The answer should be y=5x-8

help i can’t find this answer

Answers

Answer:

(-3,-17)

Step-by-step explanation:

Please help! Thank you.

Answers

Answer:

2.478x10^7

Step-by-step explanation:

They give you each radius, so you just add them together.

15,300,000+9,480,000=24,780,000 = 2.478x10^7

(or)

1.53x10^7+0.948x10^7= 2.478x10^7

PLEASE HELP!! I WILL REWARD BRANIEST!

Answers

Jackson is the answer

Answer: nate

Step-by-step explanation:

nate because 7.905  is higher than all of them

What is the distance between (3, -2), (2, -4)?​

Answers

The distance is approximately 2.236068
It could also be (in an ordered pair):

(1,-2)

Hope this helps!

help please. pleasee i will mark brain please​

Answers

Answer:

A=3

B=3

C=2.5

D=5

E=1

F=2

G=4

Here you go! Happy to help!

Step-by-step explanation:

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