Chem 2/5 FS97

Postlab for #353, Density and Statistics


1.	A student reported the density of eight glass beads as 2.818 +/- 0.27 gm/ml. 
 	What should the student report as the density of one glass bead?  Explain why.











2.	A student measured the mass of glass beads by using different balances.  
	Why would this be expected to increase the amount of error in the measurement?











3.	What is the equation for the CI (confidence interval for the mean)?
	What do the individual terms in the equation for  stand for?