Final answer:
A Cpk of 1.5 or higher indicates that your supplier's process can meet your desired quality levels.
Step-by-step explanation:
A Cpk (Process Capability Index) measures the ability of a process to produce output within specification limits. It takes into account the average and variability of the process, and a value of 1.5 or higher indicates that the process is capable of meeting the desired quality levels. Therefore, the statement is true. For example, if a Cpk value is 1.5, it means that the process is producing 99.73% of its output within specification limits. A Cpk of 1.5 demonstrates that the process output is well within the specification limits, with a relatively small proportion of the outputs expected to be defective, suggesting a high level of desired quality.