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
5(-42/-7) + (-15) - (-3)​
siniylev [52]

Answer:

2058

Step-by-step explanation:

8 0
3 years ago
Simplify the expression:<br><br> 5(–5 + 3u) =
Minchanka [31]

Answer:

-25+15u

Step-by-step explanation:

all you need to do is distribute the 5 to everything in the parenthesis!

6 0
3 years ago
Read 2 more answers
What is the solution to -2(8×-4)&lt;2x+5
Monica [59]
Distribute the -2 to get 

-16x + 8 < 2x + 5

3 < 18x 

1/6 < x

so x > 1/6
7 0
3 years ago
The graph shows the distance, y, in miles, of a moving motorboat from an island for a certain amount of time, x, in hours:
lisabon 2012 [21]

Answer:  The speed of the motorboat is 70 miles per hour

Step-by-step explanation:  Subtract the initial distance, 35, from the distance at any given time, then divide the remainder by the hours.

For example, at 2 hours, the distance shown on the graph is 175 miles

Subtract: 175 -35 = 140.  Then divide 140/2 = 70

At 4 hours, the distance shown is 315 miles.

Subtract: 315 - 35 = 280. Then divide  280/4 = 70

70 mph is the speed.

7 0
3 years ago
................................................................................................................................
kramer

Answer:

It is d.

Step-by-step explanation:

May i have brainliest

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the weight of scissors in grams
    14·2 answers
  • You are thinking about switching cell phone carriers because you don't get very good cell coverage at your new apartment. Verizo
    7·1 answer
  • PLEASE HELP ME LINK IS BELOW
    7·2 answers
  • PLS HELP
    6·1 answer
  • Um could you guys help
    10·1 answer
  • 46 = -2(m + 7) + m <br><br> solve the equation
    6·1 answer
  • A red-light flashes every 28 seconds. A green light flashes every 24
    9·2 answers
  • Simplify by combining like terms and then FACTOR the expression -3+5y+5+3y
    14·1 answer
  • 3(2x+4)=−36<br><br> Find the variable
    13·2 answers
  • Round to three decimal places <br><br> 5 = ____ liters
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!