At the begining of 6 grade the ratio of number of the advanced math students to the number of regular students was 3: 8. however after taking the placement tests students were moved around changing the ratio of the number of advanced msth students to the number of regulsr math students to 4: 7. how many students started in regular math and advanced math if there were 92 students in advanced math after placement?

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?