Question

If building failure should occur during its life, wal l both failure modes will occur? [20 points 5. A contractor has two subcontractors for his excavation work. Experience shows that in 70% of the time, subcontractor A was available to do a job, whereas subcontractor B was available 80% of the time. Also, the contractor is able to get atleast one of these two subcontractors 90% of the time. What is the probability that both subcontractors will be available to do the next job? [7 points] If the contractor leaned that subcontractor A is not available for the job, what is the probability that the other subcontractor will be available? [7 points True of false [6 points] A and B are independent A and B are mutually exclusive. A and B are collectively exhaustive.

Answer 1

ve 0 = 0.25

erna va True fave et independet f(AVB) キ! Indspcndtt and u cc a n