Question

an 80 confidence interval for is found to be (200, 240). what is the margin of error

Answer 1

Answer:

It’s 20

Step-by-step explanation:

Answer 2

The margin of error for an 80% confidence interval found to be (200, 240) is: 20.

What is Confidence Interval?

Confidence interval lies between the lower bound and upper bound and it is symmetric. The mean of the upper and lower bounds is the margin of error.

Given an 80% confidence interval with the bound (200, 240):

Margin of error = (240 - 200)/2

Margin of error = 20

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