Only four symbols are used in data flow diagrams. What are they?

______ is the sum of the discounted cash flows (DCFs) over the life of the project.

A. Payback period B. Net present value (NPV) C. Accounting rate of return (ARR) D. Internal rate of return (IRR)

The police chief in a local city claims that the average speed for cars and trucks on a stretch of road near a school is at least 45 mph. If this claim is to be tested, the null and alternative hypotheses are:H0 : ? < 45 mphHa : ? ? 45 mph

Indicate whether the statement is true or false