What is a margin of error, and how is it used to establish a confidence interval? What is the confidence interval used for?

A Margin of error : Generally margin can be defined as a statistical concept that informs the researcher or any person carrying statistical active the percentage by which his /her result will differ from the  real population value.

B Margin of error is used to establish a confidence interval by adding and  subtracting the statistical value (i.e  sample proportion or sample mean ) from the margin of error

C Generally the confidence interval tell the researcher the probability by which  a population parameter(sample proportion or sample mean) will fall between two set of values(Upper limit and  the lower limit )

Step-by-step explanation:

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation: