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
natima [27]
3 years ago
5

Bai is conducting a study on learning. When she manipulates an independent variable, it is possible that some other factor, such

as noise in the hall, can affect learning in one of the groups but not in the other. This possibility reflects the presence of:
a) random assignment
b) a confound
c) selection bias
d) a dependent variable
Mathematics
1 answer:
nlexa [21]3 years ago
3 0

Answer:

The answer is : b) a confound

Step-by-step explanation:

While manipulating, is possible that some factors like noise in the hall, can affect learning in one of the groups but not in the other.

This possibility reflects the presence of a confound.

We can define a confounding variable as an external influencing factor which results in bringing changes in the effects of a dependent and independent variable.

This variable changes the outcome of an experiment and produces useless results.

You might be interested in
What is 1.8 added 8 times? (IF YOU CAN PLS DO IT IN EXPLANATION) and this is about decimals and pls do it in grade five type, bc
Salsk061 [2.6K]

Answer:

14.4

Step-by-step explanation:

1.8 added 8 times = 1.8 * 8

1.8 * 8

use distributive property

1.8 = 1 + 0.8

1.8 * 8 = (1+0.8) * 8

          = 1*8 + 0.8*8

anything multiplied by 1 equals itself

1*8 + 0.8*8 = 8 + 0.8 * 8

0.8 = 8/10

0.8 * 8 = (8/10) * 8

           = 64/10

            = 6.4

8 + 0.8 * 8 = 8 + 6.4 = 14.4 as our answer

8 0
2 years ago
Write by what rule you know the triangles are congruent, or write CNBD for "Cannot be determined." Segments and angles are congr
Triss [41]

RSM huh. I feel bad. I'm in this too.

4 0
3 years ago
How can 400x20 help solve 399x20
Dvinal [7]
What you can do is multiply 400*20= 8,000. From here, we know that 399*20 is just one less group of 20 than 400. Therefore, we can subtract (1*20) from 8,000 to get the final answer.

8000-20=7980

Hope this helps!
5 0
3 years ago
Read 2 more answers
There are 500 computers in an office building. The IT manager randomly chose 40 computers to be inspected for viruses. Of those
EastWind [94]
About 75 computers have a virus
3 0
3 years ago
THE FUNCTION! f(x) = x^2+4 is defined over the interval (-2,2). If the interval is dived into n equal parts what is the height o
Svetradugi [14.3K]

Answer:

-2+k.5/n

Step-by-step explanation:

nsnsndksksnskksnsksnsnksnwkbsbssksj sosnanskzbwkssbkwwnkwsnwosbsndosnkssneosnenkssbkssnnkbwjwoswnks

3 0
2 years ago
Other questions:
  • The distance between city a and city b is 700 mi. on a certain wall​ map, this is represented by a length of 2.1 ft. on the​ map
    15·1 answer
  • Calculate the total budget and then fill in the missing percentages (to the nearest tenth). Item $ % Contributions $175.76 Housi
    7·2 answers
  • Jordan can swim 2 laps in minutes.<br> Select the correct unit rates for the given situation.
    10·1 answer
  • I really don't get this im so confused
    8·2 answers
  • Please help me with this brainly
    11·1 answer
  • An animal shelter has a ratio of cats to dogs that is 9:7.
    14·1 answer
  • The gradient equation for px​
    12·2 answers
  • Question is down below ​
    10·2 answers
  • Im b0red...
    9·2 answers
  • An angle measures 26.9 degrees. What is its complement?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!