A Car Mechanic Is Thinking of Guaranteeing Customers That an Oil

question 49

Essay

A car mechanic is thinking of guaranteeing customers that an oil change will take no more than 15 minutes with a 99.73% confidence level. He takes a few samples of size 5 and finds the process mean to be 13 minutes with a standard deviation of .2 minutes and average sample range of 1.2 minutes. Find the A₂, D₄, and D₃ values and use them to compute the upper and lower limits for an x-bar chart. Use the upper limit to determine if the mechanic can offer a 15 minute guarantee. Assume the mechanic plots the samples on the x-bar control chart and finds the process is in control, is there anything else the mechanic is missing to ensure the process is in control?

Recognise the importance and application of human, technical, and conceptual skills in management.

Explain the significance of developing strong interpersonal relationships within the workplace for effective management.

Discuss the process and importance of measuring work performance and taking corrective actions.

Understand the continual need for personal and professional development for career success.

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Definitions:

Infectious Diseases

Disorders caused by pathogenic microorganisms such as bacteria, viruses, fungi, or parasites, which can be spread directly or indirectly from one person to another.

Utilize Control

The practice of managing or employing something effectively to achieve a specific goal or regulate an outcome.

Disease From Bacteria

Illness caused by harmful bacterial infections, which can affect various parts of the body and lead to serious health complications.

Illness From Viruses

A condition or disease caused by the invasion of the body by viruses, leading to a range of symptoms depending on the virus.