A manufacturer of producing 50-ounce cookies was interested to inspect whether the the production process is out of control. The process is in control if it produces with variance of the packages...

A manufacturer of producing 50-ounce cookies was interested to inspect whether the the production process is out of control. The process is in control if it produces with variance of the packages between 8.5 and 17.5, otherwise it is out of control and should be adjusted. From a random sample 25 production run, it was found that the variance of the packages is 12.5. Does the data provide any evidence that the process is out of control.