A manufacturing process produces tubeless mountain bike tires in batches of 200. Past records show that 6% of the tires will not hold air. An engineer tests five batches, each one week apart, and shows the proportion of tires that will not hold air below. Proportion of tires that will not hold air: 
a. Construct the centerline and the upper control limit for the 
chart.
B) Should the engineer be worried? Comment on any trend in the proportion of tubeless tires that will not hold air.
Definitions:
Individual Psychotherapy
A therapeutic process where a trained professional helps an individual work through personal issues, using various psychological methods.
Advantages And Disadvantages
The term "advantages and disadvantages" refers to the pros and cons or positive and negative aspects of a particular decision, situation, or system.
Psychotherapy
A form of treatment for mental health issues that involves talking with a therapist to understand and overcome problematic thoughts, feelings, or behaviors.
Computer
An electronic device capable of processing, storing, and retrieving data, executing programs, and performing various tasks.
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