Calculate Margin of Error for a confidence interval of (2,10)

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Calculate the margin of error and sample mean for a confidence interval of (2,10)

Calculate interval size:

Interval Size = 10 - 2 Interval Size = 8

Calculate the margin of error:

Margin of Error =

±Interval Size

2

Margin of Error =

±8

2

Margin of Error = ±4

Calculate sample mean:

The sample mean is just the midpoint of the confidence interval

Sample Mean x =

Interval Size

2

Sample Mean x =

10 + 2

2

Sample Mean x =

12

2

Sample Mean x = 6

What is the Answer?

Margin of Error = ±4

How does the Margin of Error from Confidence Interval Calculator work?

Free Margin of Error from Confidence Interval Calculator - Given a confidence interval, this determines the margin of error and sample mean. This calculator has 1 input.

What 2 formulas are used for the Margin of Error from Confidence Interval Calculator?