Randomization in an experiment reduces bias between the treatment and control groups.

Answers

Answer 1

Answer:

True

Step-by-step explanation:

Answer 2

Answer: true

Step-by-step explanation:

A P E X


Related Questions

PLEASE HELP ASAP 30 POINTS MY BRAINS TO FRIED TO THINK. I ALREADY DID A PART OF THE ANSWER, PLEASE SOLVE THE REST.

An expression is shown below:

f(x) = −16x2 + 22x + 3

What are the coordinates of the vertex? Justify your answers and show your work.

ANSWER:
To find the vertex: the x value = f(x)=ax^2+bx+c= is -b/(2a), and y value = f(-b/(2a)).
Given: f(x)= −16x2 + 22x + 3
a= -16 and b= 22
b-/2a= -(22)/(-16*2)=11/16
PLEASE SOLVE THE REST

Answers

Answer:

Vertex is at (11/16, 169/16)

Step-by-step explanation:

f(x) = −16x^2 + 22x + 3

The vertex is at x = -b/2a

x = -22/(2)(-16) = -22/-32 = 11/16

f(11/16) = -16 (11/16)^2 +22(11/16) +3

           =-16 *11/16 *11/16 +22*11/16 +3

            = -121/16 +242/16 +3

           -121/16 +242/16 +48/16

              169/16

Vertex is at (11/16, 169/16)

Answer:

Vertex: (11/16,169/16)

Step-by-step explanation:

You plug in the x value to find the y value so

-16(11/16)^2+22(11/16)+3=

-16(121/256)+121/8+3=

-121/16+145/8=

Y=169/16

Noah has $10 to spend at the produce market. Can he buy 7 apples and 2 oranges?

Answers

Answer:

can you describe how much an apple and an orange costs?

Step-by-step explanation:

Answer:

if Noah has $10 to spend at the market then depending on the cost of apples and oranges would be weather or not he can get 7 apples and 2 oranges

Step-by-step explanation:

A basketball player makes 80% of her free throws. The random numbers below represent 20 trials for

a simulation. Let the numbers 0 to 7 represent a made free throw and let 8 to 9 represent a missed

free throw. Use this simulation to estimate the probability that the player makes both free throws.

(8,2) (9,3) (4,0) (5,8) (2,7) (2,0) (5,4) (8,0) (0,4) (9.1)

(9,6) (6,5) (4,4) (1,7) (0,4) (8,5) (8,8) (1,7) (3,5) (0,3)

Answers

Answer:

0.6

Step-by-step explanation:

The numbers 0 to 7 represent a made free throwThe numbers 8 to 9 represent a missed  free throw.

Given the simulation data

(8,2) (9,3) (4,0) (5,8) (2,7) (2,0) (5,4) (8,0) (0,4) (9.1)

(9,6) (6,5) (4,4) (1,7) (0,4) (8,5) (8,8) (1,7) (3,5) (0,3)

A pair that contains only numbers between 0 and 7 shows the player makes both throws.

These pairs are:

(4,0)  (2,7) (2,0) (5,4)  (0,4) (6,5) (4,4) (1,7) (0,4) (1,7) (3,5) (0,3)

There are a total of 12 cases where the player makes both throws.

Therefore:

P(Player makes both throws)=12/20=0.6

Indicate the equation of the line, in standard form, that passes through (2, -4) and has a slope of 3/5. Enter your answer into the blank equation box. a0

Answers

Answer:

-3/5x + y = - 26/5

Step-by-step explanation:

First, I put everything in slope-intercept form, just because it's more simple for me.

y = 3/5x + b

Since we don't have b, we can use the coordinate they give us to solve for it.

-4 = 3/5 (2) + b

-26/5 = b

y = 3/5x - 26/5

Now, we can move the variables around to fit the form:

Ax + By = C

-3/5x + y = - 26/5

I hope this helped!


Which statements are true about the unknown side length in this right triangle? Check all that apply.

A triangle with side StartRoot 13 EndRoot meters and hypotenuse of 6 meters.
The equation a squared + (StartRoot 13 EndRoot) squared = 6 squared can be used to find the unknown length.
The equation (StartRoot 13 EndRoot) squared + b squared + 6 squared can be used to find the unknown length.
The equation (StartRoot 13 EndRoot) squared + 6 squared = c squared can be used to find the unknown length.
The length of the unknown leg is StartRoot 23 EndRoot meters.
The length of the unknown leg is 7 meters.

Answers

Answer:

1,2,4

Step-by-step explanation:

edge 2020 hope this helps :>

Final answer:

The true statement about finding the unknown side length of the triangle is that the equation a² + (√13)² = 6² can be used, following the Pythagorean theorem. Other stated equations and proposed lengths are incorrect based on the theorem's application.

Explanation:

The question involves applying the Pythagorean theorem to a right triangle with given side lengths. According to the theorem, in any right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two legs (a and b). Therefore, the equation that can be used to find the unknown side length is a2 + b2 = c2. Given a triangle with one side as √13 meters and the hypotenuse as 6 meters, we can solve for the unknown leg.

Firstly, correct application for the Pythagorean theorem here is a2 + (√13)2 = 62, indicating the first statement is true. By substituting √13 for one leg and 6 for the hypotenuse, squaring the values and rearranging, we find the length of the unknown leg. The correct calculation leads to the discovery that the unknown leg length cannot be 7 meters or √23 meters, as those do not fit the requirements set by the question's parameters.

Therefore, the true statements are:

The equation a2 + (√13)2 = 62 can be used to find the unknown length.

Other suggested equations are incorrect applications of the Pythagorean theorem, and the provided side lengths do not result in the unknown leg measuring √23 or 7 meters.

ratio question
I will mark brainliest

Answers

The answers to the questions are 3 and 225000 respectively.

Using the ratio :

1 : n

Expressing the values on terms of minutes

1 hour = 60 minutes

Now we have :

20 : 60

Divide through by 20

1 : 3

Hence , n = 3

2.)

Using the ratio

1 : 25000

1 cm on the map represents 25000 kilometers on ground

9cm would be :

9 × 25000 = 225000

Hence, 9 cm would represent 225000 kilometers on ground.

Learn more on ratio : https://brainly.com/question/2328454

#SPJ1

Sorry there is a few pics please help

Answers

Answer:

D

Step-by-step explanation:

In the graph, there are only two values for a graph. In this case, those two values are crackers and calories.

Answer:

D. The two variables are the number of crackers and the number of calories.

Step-by-step explanation:

The x-axis represents the number of crackers and the y-axis represents the number of calories.

Can someone help me please

Answers

Answer:

p - 14.5 =  53

p = 67.5

Step-by-step explanation:

53 + 14.5 = 67.5

67.5 will be the correct answer

On Monday, the high was 60oF. On Tuesday, the high was 10% more than Monday. Then on Wednesday, the temperature decrease by 8%.

Answers

Answer:

60.72

Step-by-step explanation:

Monday: 60 degrees

Tuesday: temperature increases by 10 percent

60 + 10% of 60

60 + .10*60 = 70 +6 = 66

Wednesday: temperature decreases by 8 percent

66 - 8%of 66

66 - .08*66 = 66 -5.28=60.72

Answer:

60.72°F

Step-by-step explanation:

10% increase: 100+10 = 110% of the previous

On Tuesday:

110/100 × 60

66°F

Decrease by 8%: 100-8 = 92% of the previous

On Wednesday:

92/100 × 66

60.72°F

5.
A rectangle with an area of 96 square
centimeters has whole-number side
lengths. What is the difference between
the greatest and least perimeters of the
rectangles?
A. 57 centimeters
B. 60 centimeters
C. 124 centimeters
D. 154 centimeters

Answers

Answer:

60

Step-by-step explanation:

because they per pack gag waf odni kush pop pop code this fuzz quiz wants Welch yeah hasn't

Find the side length. Round to the nearest tenth if necessary.
15

Answers

Answer:

x = 39

Step-by-step explanation:

This is pythagoras

x = √36² + 15²

x = √1296 + 225

x = √1521

x = 39

Hopefully it helps you

Ask if u don't understand

HELP PLEASE 25 POINTS

Answers

Answer:

$15, $8, $1, respectively

Step-by-step explanation:

Line up the number of years with the line and check the pay.

Answer:

1. $15

2. $8

3. $1

Step-by-step explanation:

Line the number of years and see the pay of them. I hope this helps! Please mark me brainliest!

what is an object that is more than 2 feet but less than 1 yard

Answers

Answer: My TV

Step-by-step explanation: It is more than two feet but smaller than one yard

The objects which are more than 1 foot but less than 2 feet are of the measurements 1.1 feet, 1.2 feet, 1.25 feet, and so on.

What are Measurements?

Measurement is the method of comparing the properties of a quantity or object using a standard quantity.

Measurement is essential to determine the quantity of any object.

Given that,

We have to find the object which has the length of more than 1 foot but less than 2 feet.

Those objects will be having the measurements in between 1 foot and 2 feet.

1 foot is approximately 30.5 cm.

So, the object will be having the length of 30.5 cm to 61 cm.

Hence the required objects will be having the length in between 30.5 cm to 61 cm.

Learn more about Measurements here :

brainly.com/question/17118357

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"Your question is incomplete, probably the complete question/missing part is:"

What is an object that is more than 1 foot but less than 2 feet.

the HL theorem is a special case of the ___.

Answers

SSS POSTULATE is the answer

Answer:

SSS POSTULATE is the answer

Step-by-step explanation:

Cara started working for $9 per hour. She earns a 4% raise every year. What is her
hourly wage after three years?

Answers

Caras hourly wage is $10.08 after 3 years
Step-by-step explanation:
4% of 9
0.04 x 9 = 0.36
then you multiply 0.36 by 3 because you are solving for 3 years.
0.36 x 3 = 1.08
then you add 1.08 to 9 because Cara's wage goes up $1.08 in 3 years
1.08 + 9 = 10.08
answer:
Cara's hourly wage is $10.08 after 3 years of working

Describe or show two ways to find the following product 1/4 x 2/3

Answers

Answer:

1-1/4 x 2/3= 2/12 or 1/6

Step-by-step explanation:

The dot plot below shows Angela's bowling scores for her last ten games.
144 146 148 150 152 154 156 158 160
Bowling Scores
What is the interquartile range of the data set shown?
OA. 12
OB. 16
Oc. 3
OD. 8

Answers

Answer:

8

Step-by-step explanation:

Study Island

Final answer:

The interquartile range of Angela's bowling scores is determined by calculating the difference between the third quartile (Q3) and the first quartile (Q1). In this case, the IQR is D. 8.

Explanation:

To find the interquartile range (IQR) of Angela's bowling scores, we need to identify the first quartile (Q1, 25th percentile) and the third quartile (Q3, 75th percentile) of her data set. The scores are already in ascending order: 144, 146, 148, 150, 152, 154, 156, 158, 160. With ten scores, Q1 will be the average of the 2.5th and 3.5th data points (which is the score at position 3), and Q3 will be the average of the 7.5th and 8.5th data points (which is the score at position 8).

When we look at the data, the first quartile Q1 is at the score 150 (the average of the third and fourth scores since they are the same), and the third quartile Q3 is at the score 158 (the average of the eighth and ninth scores since they are the same). So, the interquartile range is Q3 - Q1 = 158 - 150 = 8.

The correct answer is D. 8.

What two angle measurements could create a set of complementary angles?
What two angle measurements could create a set of supplementary angles?

Answers

Answer:

Example: 45+45

Example: 100+80

Step-by-step explanation:

Any two angles that sum to 90 degrees will create a set of complementary angles, and any two angles that sum to 180 degrees will create a set of supplementary angles.

Convert 3 – 3i to polar form.

Answers

Answer:

z =3−3i

Step-by-step explanation:

Answer:

Step-by-step explanation:

answer: 3[tex]\sqrt{2}[/tex] cis [tex]\frac{7\pi }{4}[/tex]

explination:

z = 3 -3i

r = [tex]\sqrt{3^{2} + 3^{2} }[/tex]

r = 3[tex]\sqrt{2}[/tex]

θ = [tex]2\pi + tan^{-1} ( -\frac{3}{3} )[/tex]

θ = [tex]2\pi + tan^{-1} ( -1 )[/tex]

θ = [tex]2\pi - \frac{\pi }{4}[/tex]

θ = [tex]\frac{7\pi }{4}[/tex]

= 3[tex]\sqrt{2}[/tex] cis [tex]\frac{7\pi }{4}[/tex]

PLZ HELP!!! Will mark brainliest if answers are correct and give a thanks with rating of 5. I'm being timed I need answer as soon as possible. 20 points!!!







































Answers

College grad and 20 points make the answer

Find a positive number that equals 110 when added to its square

Answers

Answer:

10

Step-by-step explanation:

Answer:

The answer is 10

Step-by-step explanation:

(x+11) (x-10) = 0

Positive Solution:

x = 10

Cindy went to Maggie Moo’s for an ice cream cone after school. The ice cream cone had a radius of 3 inch, a height of 2 inches, and a slant length of 3 inches, how much ice cream could the cone hold? (use 3.14)

_____inches3

Answers

Answer: 56.52

Step-by-step explanation: You multiply both the 3’s and get 9 then you multiply that by 2 and that answer you multiply it by 3.14

What is the value of this expression when a = 3 and b = negative 2? (StartFraction 3 a Superscript negative 2 Baseline b Superscript 6 Baseline Over 2 a Superscript negative 1 Baseline b Superscript 5 Baseline EndFraction) squared

Answers

Answer:

1

Step-by-step explanation:

for the points

Answer:

1

Step-by-step explanation:

you're welcome :)

Nathan opened a savings account with $1700 that pays no interest. He deposits an
additional $180 each week thereafter. How much money would Nathan have in the
account 35 weeks after opening the account? Round to the nearest tenth (if
necessary).

Answers

Answer:

$8,000

Step-by-step explanation:

He starts with %1700. If he adds $180 for 35 weeks, you multiply 180 by 35, and you get $6300, then you add the original $1700 and the $6300, you get $8000

Answer:

$8000

Step-by-step explanation:

$180x35+$1700=$8000

Four boxes are shown in order from the largest volume to the smallest volume. For each box, all of the dimensions are 3.5cm less than the next larger box. To the nearest cubic centimeter, what is the volume of box D?

Answers

Answer:

C

Step-by-step explanation:

It would be -12 to go to the last cube so u subtract 12 from every number then multiply the numbers

The correct answer is option B. The volume of box D is approximately 1,715 cubic centimeters.

To find the volume of box D, we'll start by determining the dimensions of each box in sequence from box A to box D. We'll then calculate the volume of box D.

Step-by-Step Process

1. Determine the dimensions of box A:

Length [tex]\( L_A = 32 \) cm[/tex]

Breadth [tex]\( B_A = 25 \) cm[/tex]

Height [tex]\( H_A = 16 \) cm[/tex]

2. Calculate the volume of box A:

[tex]\[ V_A = L_A \times B_A \times H_A = 32 \times 25 \times 16 \][/tex]

[tex]\[ V_A = 12800 \text{ cubic centimeters} \][/tex]

3. Determine the dimensions of box B:

Each dimension is 3.5 cm less than the corresponding dimension of box A.

Length [tex]\( L_B = L_A - 3.5 = 32 - 3.5 = 28.5 \) cm[/tex]

Breadth [tex]\( B_B = B_A - 3.5 = 25 - 3.5 = 21.5 \) cm[/tex]

Height [tex]\( H_B = H_A - 3.5 = 16 - 3.5 = 12.5 \) cm[/tex]

4. Determine the dimensions of box C:

Each dimension is 3.5 cm less than the corresponding dimension of box B.

Length [tex]\( L_C = L_B - 3.5 = 28.5 - 3.5 = 25 \) cm[/tex]

Breadth [tex]\( B_C = B_B - 3.5 = 21.5 - 3.5 = 18 \) cm[/tex]

Height [tex]\( H_C = H_B - 3.5 = 12.5 - 3.5 = 9 \) cm[/tex]

5. Determine the dimensions of box D:

Each dimension is 3.5 cm less than the corresponding dimension of box C.

Length [tex]\( L_D = L_C - 3.5 = 25 - 3.5 = 21.5 \) cm[/tex]

Breadth [tex]\( B_D = B_C - 3.5 = 18 - 3.5 = 14.5 \) cm[/tex]

Height [tex]\( H_D = H_C - 3.5 = 9 - 3.5 = 5.5 \) cm[/tex]

6. Calculate the volume of box D:

[tex]\[ V_D = L_D \times B_D \times H_D = 21.5 \times 14.5 \times 5.5 \][/tex]

[tex]\[V_D = 1714.625 \text{ cubic centimeters}\][/tex]

[tex]\[V_D \approx 1715 \text{ cubic centimeters}\][/tex].

The complete question is:

Four boxes are shown in order from the largest volume to the smallest volume. For each box, all of the dimensions are 3.5cm less than the next larger box. To the nearest cubic centimeter, what is the volume of box D?

A. 3,657 cubic centimeters

B. 1,715 cubic centimeters

C. 1,044 cubic centimeters

D. 299 cubic centimeters

Suppose you are told that the average height of a stone block is 1.39 m rather than 1.4 m. Would that increase or decrease your estimate of the total number of blocks in the pyramid? Explain.

Answers

Answer:

Increase

Step-by-step explanation:

Since the total number of blocks in a pyramid is found by dividing the height of pyramid by the height of each block, then the block height of 1.39 m requires more pieces compared to 1.4 m

Illustration

If the height of pyramid was 139 m, the number if blocks each measuring 1.39 m will be 139/1.39=100+1 blocks while if blocks are 1.4m then number will be 139/1.4=99+1 blocks

Therefore, the height of 1.39m will increase the number of blocks

6. The temperature of an iron block decreases from 85°C to 25°C. If the mass for
the block is 1.2 kg, calculate the heat lost by the block. (Citon = 0.115 cal/g.°C)

Answers

Answer:

8280 cal

Step-by-step explanation:

Q=mc(delta)T

Q=1200(0.115)(-60)

Q=8280 cal

I used 1200 g instead of 1.2 kg

Kate wants to paint every surface of the paperweight
diagrammed
The area of the base of the rectangular prism is
cm²
The area of each triangular base of the triangular prism
is cm2
The lateral area of the rectangular prism is
cm2
The total surface area of the paperweight is
cm2

Answers

Answer:

The area of the base of the rectangular prism is 200 cm2.

The area of each triangular base of the triangular prism is 45 cm2.

The lateral area of the rectangular prism is 720 cm2.

The total surface area of the paperweight is 1,210 cm2

Step-by-step explanation:

Hope this helps!

What is the distance from (-2,4) to (0,-6)? Round your answer to the nearest hundredth.
A. 9.23
B. 10.20
C. 10.98
D. 11.34

Answers

B. 10.20 trust me it’s correct I did the math it’s too much to put here

Answer: its B 10.20

Step-by-step explanation:

The seventh-grade spring class trip will either be to a zoo or an art museum. Which survey method is most likely to provide a biased sample?

Answers

Answer:

7) A school group is assigned to survey vast museum collections of all macroscopic (not microscopic) animal species collected from various regions around the world. What observation are the students most likely to make? A) The majority of the animals are wormlike. B) The majority of the animals possess a …

Step-by-step explanation:

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