Question: Discuss specific characteristics that could be monitored through variables control charts, the form of data to collect, and the appropriate control chart in the following
(a) Waiting time to check in baggage at an airport counter
(b) Product assembly time in a hardware company
(c) Time to develop a proposal based on customer solicitation
(d) Emission level of carbon monoxide for a certain model of automobile
(e) Detection of a change in average response time to customer queries, when the degree of change is small
(f) Changes in blood pressure of a patient over a period of time
(g) When to change a tool in a machining operation when the tool wears out with use and it is desired that product nonconformance level not exceed a stated level
(h) Acceptance of products manufactured in batches, where batch means of the characteristic selected are determined, with the ability to detect a set proportion nonconformance with a desired level of probability
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