#### chubby347765

##### New member

- Joined
- Apr 28, 2008

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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.

Mean=579

Sd=14

Find the z-score for each question as z=(x-mean)/sd

Z=(x-579)/14

(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?