I completed the steps as instructed.  The workflow rule and Process Builder work in the app. When I click Verify on Trailhead, I get the following error.  

Step Not yet complete... here's what's wrong: 
The validation rule does not appear to have the correct error formula. Make sure Exhaust Port Inspectors have > 150% utilization' 
Note: you may run into errors if you've skipped previous steps.

Here is my validation rule:   AND ( Name = "Exhaust Port Inspector", Utilization__c < 1.5)

I'm very puzzled that it works in the app, but is returning a verify error