Question

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

Answer 1

Answer:

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: