What is Tea Shop's process capability index? Determine whether each process is capable of producing to specifications Tea Shop Herb's Tea Garden is a small tea shop specializing in blended loose leaf hot tea. Customers select from a variety of fine loose tea leaves, dried flowers and dried fruits to create their own unique tea blend. Because of the popularity of the tea shop, combined with the custom blending process, waiting times can sometimes be excessive; most customers would prefer to wait less than five minutes. Spec Limits Lower Upper 0 5 Control Limits Lower Upper 2.8665 3.3051 Is this process capable? YES LSL USL O NO LCL UCL Frequency 1 - Customer Wait Times (minutes)