Question
Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence interval of (3.1,4.1) when estimating the mean height (in centimeters) of a sample of seedlings. The estimated margin of error is square
Answer
3.9
(270 Votes)
Sienna
Master · Tutor for 5 years
Answer
The estimated margin of error is 0.5 and the sample mean is 3.6.
Explanation
The margin of error in any case is calculated by subtracting the lower limit from the upper limit of the confidence interval and dividing it by 2. Additionally, the sample mean (also called the point estimate) is the midpoint of the confidence interval, and is calculated by adding the upper limit to the lower limit and dividing by 2.