Question

use the given confidence interval to find the margin of error and the sample mean. (6.37,11.21) the sample mean is 8.79. (type an integer or a decimal.) the margin of error is. (type an integer or a decimal.)

Explanation:

Step1: Recall the formula for margin of error

The margin of error \(E\) can be found using the formula \(E=\frac{\text{Upper limit}-\text{Lower limit}}{2}\).

Step2: Substitute the values

Given the lower limit \(L = 6.37\) and upper limit \(U=11.21\).

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Step3: Calculate the value

\(E = 2.42\)

Answer:

The margin of error is \(2.42\)