The stiffness of a certain type of steel beam used in building construction has mean 30
Chapter 4, Problem 10(choose chapter or problem)
The stiffness of a certain type of steel beam used in building construction has mean
\(30 \mathrm{kN} / \mathrm{mm}\) and standard deviation \(2 \mathrm{kN} / \mathrm{mm}\).
a. Is it possible to compute the probability that the stiffness of a randomly chosen beam is greater than \(32 \mathrm{kN} / \mathrm{mm}\)? If so, compute the probability. If not, explain why not.
b. In a sample of 100 beams, is it possible to compute the probability that the sample mean stiffness of the beams is greater than \(30.2 \mathrm{kN} / \mathrm{mm}\)? If so, compute the probability. If not, explain why not.
Equation Transcription:
Text Transcription:
30 kN/mm
2 kN/mm
32 kN/mm
30.2 kN/mm
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