Use the given confidence interval to find the margin of error and the sample mean.
$(13.8,21.0)$
The sample mean is
(Type an integer or a decimal.)

Answer

Expert–verified

Hide Steps

Answer

Final Answer: The sample mean is $\boxed{17.4}$ and the margin of error is $\boxed{3.6}$

Steps

Step 1 ：Given the confidence interval (13.8, 21.0), we can find the sample mean $\bar{x}$ by calculating the midpoint of the interval, and the margin of error $E$ by calculating half the width of the interval.

Step 2 ：Calculate the sample mean: $\bar{x} = \frac{{13.8 + 21.0}}{2} = 17.4$

Step 3 ：Calculate the margin of error: $E = \frac{{21.0 - 13.8}}{2} = 3.6$

Step 4 ：Final Answer: The sample mean is $\boxed{17.4}$ and the margin of error is $\boxed{3.6}$

Use the given confidence interval to find the margin of error and the sample mean.$(13.8,21.0)$The sample mean is(Type an integer or a decimal.)

Answer

Popular Problems

Use the given confidence interval to find the margin of error and the sample mean.
$(13.8,21.0)$
The sample mean is
(Type an integer or a decimal.)