The magnitude of an earthquake is calculated using the richter scale, , where i0 is the threshold intensity and the intensity i is given in terms of multiples of that threshold intensity. which is the correct expression to find the magnitude of an earthquake that had the intensity 980 times the threshold intensity?

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?