In statistical process control (spc), if a sample of items is taken and the mean of the sample is outside the control limits, the process is:
a. out of control and the cause should be established
b. producing high quality products
c. in control and capable of producing within the established control limits
d. in control, there is no need for concern within the established control limits with only natural causes of variation

The process will be out of control and the cause must be established

Explanation:

The statistical method in which the employers handle to control the quality and to control the process of a specific process and they help to function efficiently

This will ensure that the products operates efficiently and if the products produce more specifications and the tools that are included will include the run charts the control charts and the main focus will be on the continuous improvement and in the design of the experiments

the answer is d

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