Mathematics High School

When do we use pooling in inference?

Answers

Answer 1
There are two versions of this test, one is used when the variances of the two populations are equal (the pooled test) and the other one is used when the variances of the two populations are unequal (the unpooled test).
Answer 2

Answer:

There are two versions of this test, one is used when the variances of the two populations are equal (the pooled test) and the other one is used when the variances of the two populations are unequal (the unpooled test).

Step-by-step explanation:

Related Questions

Without graphing, find the slope of the line that goes through (-3, -2) and (-1, -5). *

Answers

-3/2

We can find slope using the equation (y2-y1)/(x2-x1). Substitute your values in for the xs and ys.

(-5 - (-2))/(-1 - (-3))

-3/2

U.
2(5 + r)
A. 7 + r
B. 10 + 2r
C. 12r
D. 7 + 2r

Answers

Answer:

B. 10+2r

Step-by-step explanation:

make the cockroach method it distribute the numbers and letters.

It says solve for the variable can you help me

Answers

Answer:

X=37

Step-by-step explanation:

Add 4x+2 and 30 it equals to 180. Then you get x.

X=37 I agree with the other person

Find the length of side a.


Answers

Answer:

b

Step-by-step explanation:

6^2+8^2=10^2

Answer:

B:8

Step-by-step explanation:

Use the Pythagorean Theorem.

2-10n more math homework :|

Answers

Step-by-step explanation:

Yea we need more information.

Need help on this equation please :(

Answers

Answer:

x=7

Step-by-step explanation:

mark me branlist and if anyone help me with my question from my profile would be appriciate.

Find the value of the variable(s). If your answer is not an integer, leave it in simplest radical form.
x=10/3 x=10,y=30/3 x=30.y=10/3

Answers

Answer:

Use the fact that sin(x) = opp/hyp and tan(x) = opp/adj

where opp=opposite, hyp=hypotenuse, adj=adjacent and recall sin(30)=1/2 and tan(30) = 1/sqrt(3)

sin(30) = 1/2 = 17/y

y = 17(2) = 34

tan(30) = 1/sqrt(3) = 17/x  

x = 17sqrt(3)

So the answer is (d)

Note that you could have also use the Pythagorean theorem to find x instead of using tan(30).

Which expression is equal to 21/48?
a. 1/2 x 11/48
b. 7/12 x 3/4
c. 3/48 x 7/48
d. 10/6 x 11/8

Answers

Answer:

option b

Step-by-step explanation:

21/48 reduced to it's lowest term is 7/16 and solving option b... 7/12 ×3/4 3 would divide 12 to give 4 and multiply what you have left which is 7/4 ×1/4 would be equal to 7/16

Evaluate each expression for the given value(s) of the variable(s). 5(9 + d) − 6 when d = 3

Answers

Answer:
54

Explanation:

Simplify the expression
5 (9 + d) - 6

If d = 3 replace d variable with 3 and solve

5 (9 + 3) - 6
5 x 12 = 60
60 - 6 = 54

Factor each expression using the greatest common factor. 8x - 28; 12x + 15

Answers

Answer:

Step-by-step explanation:

8x -28 = 4(x - 28)

12x + 15 = 3(4x + 5)

Karem drives his car and 96 miles in 1 1/2 hours of karem continues to drive at this rate how many miles will you travel in 2 1/2 hours?

Answers

Answer:you have to find how much hrs are together the multiply by 2 and dived really i just need points

Step-by-step explanation:

Evaluate the following expression. Round to the nearest hundredth when necessary.
27

Answers

Answer:

27?

Step-by-step explanation:

27 is a whole number you know

CAN SOMEONE PLEASE GIVE ME THE ANSWERS TO ALGEBRA NATION SECTION 7 TOPIC 6 WILL MAKE BRAINLIEST

Answers

Answer:

Im hella sorry i couldn't find the answer i tried my best sorry :c

In the following figure, the value of x is...

Answers

Answer:

8.3

Step-by-step explanation:

Find the quotient and remainder when the first polynomial is divided by the second 3x⁴+16x³+6x²-2x-13; x+5

Answers

Answer:

Quotient : 3x³ + x² + x + 3

Step-by-step explanation:

Give the polynomial :

Dividend : 3x⁴+16x³+6x²-2x-13;

Divisor : x+5

Kindly check attached picture for detailed explanation.

find the area of the circle with a cirumfererference of 30pi write your solution in terms of pi

Answers

Answer:

225 pi

Step-by-step explanation:

2pi r=30pi

pi r =15pi

pi r2=225pi

225 pi

In the diagram below, BD AE, BF bisects ZABD, mC = 88° and
mZBFE = 116°. Find mZE.
Can some help me?

Answers

Answer:

40

Step-by-step explanation:

[tex]180 - 116 = 64[/tex]

[tex]180 - 64 \times 2 = 52[/tex]

[tex]180 - 52 - 88 = 40[/tex]

This is my last question can someone help? And make sure the answer is right?

Answers

Answer:

C, [tex]10[/tex]

Step-by-step explanation:

[tex]7x+10=8x[/tex]

subtract [tex]7x[/tex] form both sides

[tex]10 = x[/tex]

plz mark me brainliest. ;)

Solve the system of equations.
y=x+2
y=4x+23
Write your answer as
X=
y=

Answers

Answer:

Step-by-step explanation:

The required solutions of the given system of equations is x = -7 and y = -5.

What are simultaneous linear equations?

Simultaneous linear equations are two- or three-variable linear equations that can be solved together to arrive at a common solution.

Here,

Given system of equation

y=x+2 - - - - -(1)

y=4x+23 - - - - (2)

From above equations,
x + 2 = 4x + 23
x = -7

Now,
y = -7 + 2
y = -5

Thus, the required solutions of the given system of equations is x = -7 and y = -5.

Learn more about simultaneous equations here:

https://brainly.com/question/16763389

#SPJ5

1
Question *
(5 Points)
Find the value of x in the diagram below.

Show your work

Answers

Answer:

Step-by-step explanation:

wheres X on the screen

A math workbook is 0.5 in. thick. how many of these book will fit on a shelf that is 36 in. long?​

Answers

Answer:

72 books will fit on the shelf

Question: P=IRT solving for I

Answers

Answer:

I = P/(RT)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to Right  

Equality Properties

Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtraction Property of Equality

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

P = IRT

Step 2: Solve for I

[Division Property of Equality] Divide RT on both sides:                             P/(RT) = IRewrite/Rearrange:                                                                                         I = P/(RT)

create a polynomial in the form ax^3+bx^2+cx=0 that has solutions of x=0,x=-5 and x=11, where a=3

Answers

3x^3-18x^2-165x=0

Since we are given the solutions, we can rewrite them.

x=-5 is (x+5)

x=11 is (x-11)

x=0 is just x

Now we can write our equation:

3x(x+5)(x-11)=0

*3 comes from the a being 3

Now we multiply, I’d recommend starting by using FOIL on the last two first and getting;

3x(x^2-6x-55)=0

Then distribute the 3x:

3x^3-18x^2-165x=0

Pls hurry !

What is the graph of the equation?
X=-3

Answers

Answer:

b

Step-by-step explanation:

list five rational numbers between -1 and 0

Answers

-1/5 -2/5 -3/5 -4/5 -1/2

Given parallelogram ABCD, find x, y, and z.

Answers

Answer:

Step-by-step explanation:

z-15 + 2z = 180

3z-15 = 180

3z = 195

z=65

130=m<C

130=m<A

50=m<D

50=m<B

what is the midpoint of AB?

Answers

Answer:

(-4,-0.5)

Step-by-step explanation:

What is the solution to the following inequality?
14-7X
O A. X>7
B. XX-2
O C. x>9
D. X-2

Answers

The solution for the inequality would be A

What is the missing length?

Answers

Answer:

12.1

Step-by-step explanation:

to doublecheck times it 8 to see if you get 96.8

12.1 just multiply 8 by 12.1 and see if you get 96.8 yrds

Find the measure of the indicated angle will give brainliest

Answers

Answer:

it should be 40º but it doesn't look like that's an option...

Step-by-step explanation:

so we know that the inside of a triangle is equal to 180º and for the triangle on the right we already have two angles. so we can add the angles (41 + 72 = 113) and then subtract that from 180 to find the missing angle.

180 - 113 = 67º

now we also know that vertical angles are congruent/the same. so the vertice that is connecting the two triangles is also 67º. we can do the same thing we did with the other triangle, add the angles up and subtract from 180.

67 + 73 = 140

180 - 140 = 40º

we know this is true because when you add all the angles up it equals 180.

67 + 73 = 140 + 40 = 180

44 would put it at 184º which is not correct, and 150 would put it at 290ª which is also not correct...

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