A biologist reports a confidence interval of (3, 2, 3, 8) when estimating the mean height in (in centimeters) of a sample of seedlings. The estimated margin of error is __________ , The sample mean is ________.

Answer 1

Add the two values together, then divide by 2 to get the mean:

3.2 + 3.8 = 7.0

Divide 7.0 by 2 = 3.5 = mean

Margin of error = .3

3.5 - .3 = 3.2

3.5 + .3 = 3.8

I hope this will help you with other problems of this type.