Posted by **Mary Ann** on Sunday, January 8, 2012 at 9:31pm.

The fracture strength of a certain type of manufactured glass is normally distributed with a mean of

579 MPa with a standard deviation of 14 MPa. (a) What is the probability that a randomly chosen

sample of glass will break at less than 579 MPa? (b) More than 590 MPa? (c) Less than 600 MPa?

(Data are from Science 283 [February 26, 1999], p. 1296.)

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