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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 situations: (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 (1) 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