Question

calcium is essential to tree growth because it promotes the formation of water maintain so walls. In 1990, the concentration of calcium and precipitation in a certain area was 0.12 mg/L. A random sample of 10 precipitation dates in 2007 results in the following data table complete parts a through C below.

I need to find the lower and upper bound, the data table is right beside question B

DIT UI am precipitation has changed since 1990. Ho H 0.12 mg/ # 0.12 mg/ (b) Construct a 99% confidence interval about the sample mean concentration of calcium precipitation The lower bound is The upper bound is (Round to four decimal places as needed.) Data Table - Х 0.064 0.189 0.079 0.105 0.088 0.242 0.231 0.313 0.128 0.096 Enter your answer in the edit fields and til Print Done 1 pan Clear All remaining HA Type here to search o

Answer 1

The statistical software output for this problem is:

One sample T confidence interval: Mean of variable 99% confidence interval results: Variable Sample Mean Std. Err. DF L. Limit U. Limit Data 0.1535 0.026811793 9 0.066366085 0.24063392

From above output, 99% confidence interval is:

Lower = 0.0664

Upper = 0.2406