The fracture strength of tempered glass averages 14 (measured in thousands of pounds per square inch) and has standard deviation 2.
a what is the probability that the average fracture strength of 100 randomly selected pieces of this glass exceeds 14.5?

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %