7. (Devore : Section 4.3 #40) T he article “Monte Carlo Simulation Tool for Better Understanding…

7. (Devore : Section 4.3 #40) T he article “Monte Carlo Simulation Tool for Better Understanding of LRFD suggests that yield strength (ksi) for A36 grade steel is normally distributed with u 36 grade steel is normally distributed with μ = 43 43 and σ = 4.5 (a) What is the probability that yield strength is at most 40? Greater than 60? (b) What yield strength value separates the strongest 75% from the others?