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.
Answer:
210
Step-by-step explanation:
2 x 3 x 5 x 7 = 210
Answer:
16z
Step-by-step explanation:
z = the unknown number of pounds
16 ounces in 1 pound.
So z pounds = 16z
or it can be given as a proportion;
You need to win 30 matches in a row to raise its winning percentage to 90%
Answer:
D
Step-by-step explanation:
The highest power of X in D is 2; hence we see
6x^2 - 6x + 5
