A project consists of four activities with information as shown in the table. What is the overall variance of the project?
Activity Predecessor Length Variance
A -- 10 4
B A 12 3
C B 16 5
D C 14 6
A) 4.24
B) 8.41
C) 18
D) 24
C
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The most accurate way to evaluate the training program is to:
A. use only a pretest. B. conduct pretests and train only part of the employees. C. conduct pretests and posttests on all trainees. D. use only a posttest. E. check trainees' performance, knowledge, and attitudes only after training.
The system of Social Security is based on young working people paying taxes to support older retired people. The dependency ratio is the number of workers to retirees. Forty years ago it was 16 workers for every one retiree
What will happen to this ratio by the year 2048? A) It will reverse so that there will be more retirees than workers. B) It will increase, because there will be more young workers than retirees. C) It will decline to 2 workers for every 1 retiree. D) Nothing, since the ratio of young people to old people does not change.