How can Murarka find out if the process involved in the premium express scheme is under statistical control?

2. How can Murarka identify the potential causes for the delay in the delivery of the shipments booked under the premium express scheme? Explain and show related method.

3. Explain in detail an approach Murarka could take to identify the major causes for the delay in shipment.

4. What is meant by process capability? How can Murarka determine if the new processes met the target defect proportion? What are your thoughts on improving the process?

5. Murarka realized the customer claim was increasing, so they decided to raise their sample size to 250 from week 10. If the number of complaints from weeks 10 to 20 are based on this sample size, analyze the process performance.

6. To ensure the process's performance, a sample took in week 21, and it was below the lower control limit. So what does Murarka need to do?