1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Reptile [31]
1 year ago
5

Select all the correct answers. a group of scientists is conducting an experiment on the effects of media on children. they rand

omly select 100 children and randomly assign each child to one of four treatment groups. each treatment group has a specific amount of screen time during a one-week time frame. the first group has no screen time, the second group has two hours of screen time, the third group has four hours of screen time, and the fourth group has six hours of screen time. after the first week, the scientists conduct the same experiment, with the same subject groups, for three more weeks so that each group experiences each of the four treatments. which statements about this study are true?
Mathematics
2 answers:
Julli [10]1 year ago
6 0

Answer:

This study uses random sampling

This study uses a control group

This study uses a repeated measures design ​

Romashka [77]1 year ago
5 0

Answer:

this study uses random sampling

this study uses a control group

this study uses a repeated measures design ​

Step-by-step explanation:

plato 2022

You might be interested in
2x+3y=9<br> 2x+y=7<br> simultaneous equation
Marat540 [252]

Answer:

x=3 and y=1

Step-by-step explanation:

subtract equation 2 from 1

then (2x+3y) -(2x+y) =9-7

2x-2x+3y-y =2

2y=2 therefore y=1

substitute y value in 2x+y=7

2x+1=7

2x=7-1

2x=6

x=3

3 0
3 years ago
A ) Rotate Trapezoid ABCD 90° counterclockwise around the origin .
FinnZ [79.3K]

Answer:

A" (3,3)

B" (3,5)

C" (5,7)

D" (5,1)

Yes they are congruent as they are similar and have the same shape and size.

Step-by-step explanation:

-y,x is the formula for a 90° counter clockwise rotation, And since the shape nor size doesnt change it is congruent.

8 0
1 year ago
Solve 5x(x-4) using distributive property
vodomira [7]

Answer:

5x² - 20x

Step-by-step explanation:

multiply each term in the parenthesis by the 5x outside

5x(x - 4)

= (5x × x ) + (5x × - 4 )

= 5x² + (- 20x) = 5x² - 20x


4 0
3 years ago
Read 2 more answers
Sherry is a waitress at a country club restaurant. She receives an automatic 15% tip which is added to the member's check for th
cricket20 [7]

Answer:

hii there

the correct answer is option ( D ) $143.50

hope it helps

have a nice day

7 0
2 years ago
What is the value of 6x+7y−56x+7y−5 when x = 2 and y = 3?
Bingel [31]
You need to Solve 62+73-562+73-5 which should get you -359
4 0
3 years ago
Other questions:
  • I need to simplify this... (4a^3+7a^2b+6b^3) + (a^3+2a^2b+4b^3)
    7·1 answer
  • If f(x)= 6x and g(x)= 4x+1, find (f o g)(x)<br><br>a. 24x^2+6x<br>b. 24x+1<br>c. 24x+6<br>d. 10x+1
    14·1 answer
  • Bryce ran a race that was 2.5 miles long. How long was the race, in feet? Round your answer to the nearest hundred. A. 2,100 ft
    6·2 answers
  • What of these types of income is taxed?
    11·1 answer
  • What Is a area with dimensions 1 unit times 1 unit
    14·1 answer
  • How do you know that 17 thousandths has more than two places to the right of a decimal?
    11·1 answer
  • Exhibits
    8·1 answer
  • Please answer and explain I’ll mark brainliest!!!!!
    7·1 answer
  • Please help. I need to get this right.
    13·1 answer
  • A sports team sold a total of 293 adult and child tickets to a recent game. Adult tickets cost $25.50 and child tickets cost $8.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!