_____ is the most significant factor in deciding the size and composition of the labor force, which comprises people who are working and those who are looking for work.

The ________ is an auction in which the buyer places an item for bid on a request for quote system, potential suppliers bid on the job, with the price reducing sequentially, and the lowest bid wins

Fill in the blank(s) with correct word

Which of the following statements is true for any two events A and B defined on a sample space S?

A) If the intersection of events A and B is the empty set, then A and B are collectively exhaustive. B) If the union of events A and B is the empty set, then each of A and B is the empty set. C) If events A and B are collectively exhaustive, then A ? B ? ?. D) If events A and B are mutually exclusive and collectively exhaustive, then the union of A and B is not necessarily the sample space.