Final answer:
In a CMU project requiring Level B quality assurance, the f'm needs to be verified during the testing phase. Verification ensures the system meets the desired reliability and performance levels.
Step-by-step explanation:
In a CMU project that requires Level B quality assurance, the f'm (or mean failure metric) needs to be verified during the testing phase of the project. Level B quality assurance is one of several levels defined in the Capability Maturity Model Integration (CMMI), which is a framework for process improvement in software development.
Verification of the f'm involves checking that the calculated mean failure metric aligns with the expected values based on the requirements and specifications of the project. This verification ensures that the system being developed meets the desired levels of reliability and performance.
For example, if the f'm is defined as the average number of failures per unit test, it should be calculated and compared against the specified threshold to ensure that it falls within the acceptable range. This verification helps detect any potential issues or deviations from the expected performance levels.