How many of the following statements is/are correct? -Two variables are said to be confounded when their effects on the response cannot be separated
-The purpose of an observational study is to avoid confounding and to establish causation
- A specific set of experimental conditions applied to the units is called a treatment.
-Matched pairs design is one of the simple and common type of observational studies.
Select one:
a. 3
b. 0
c. 2
d. 4
e. 1

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )

b

from the sentence, "tomorrow morning, akiko will arrive an hour late" depicts a third person perspective because it doesn't use any pronoun to replace akiko, the subject of the sentence, and it is in singular form since akiko is only one person.

the answer i believe is 27 units.

step-by-step explanation: