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Question

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.)

Solution

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Step 1

1 of 10**a.** For this part we will calculate the probability that a randomly selected sample of glass will break below $579$ MPa.

*Given the mean and the standard deviation, how can we calculate this?*

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