Question: A total of 58 AISI 1018 cold-drawn steel bars were tested to determine the 0.2 percent offset yield strength Sy. The results were Where Sy

A total of 58 AISI 1018 cold-drawn steel bars were tested to determine the 0.2 percent offset yield strength Sy. The results were

Where Sy is the class midpoint and f is the class frequency. Estimate the mean and standard deviation of S y and its PDF assuming a normal distribution.

S, kpsi 64 68 72 76 80 84 88 92 2 6 699 10 4 2

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