Ten samples of coal from a Northern Appalachian source had an average mercury content of 0.242 ppm with a standard deviation of 0.031 ppm. Find a 95% confidence for the mean mercury content of coal from this source.

Chapter 1 Statistics: The Art and Science of Learning From Data 1.1 Using Data to Answer Statistical Questions What is statistics The art and science of learning from data — designing studies, analyzing the data, and translating data into knowledge and understanding of the world around us. Who uses statistics It seems that nearly everyone in every ﬁeld uses statistics in some way shape or form....