Rick operates a concession stand serving Iced Tea at the Los Angeles County Fair.  Ben is the only employee stationed at his stand.  Also, suppose that the following information holds good.  The mean service time is six minutes.   Control limits are 3 standard deviations on either side of the mean service time. The standard deviation is 0.5 min. Lower and Upper specification limits for a service time are 5.0 minutes and 7.0 minutes, respectively. Based on the above information, we can best infer that: a. Rick needs to change the lower spec. limit to 4.5 minutes and the upper spec. limit to 7.5 minutes. b. Rick always serves iced tea within the time limit expectations of any customer. c. Rick service process is NOT a capable one. d. Rick service process is a capable one. e. b and d are true.

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Lean Production

The word lean refers to the “slim “that is used in manufacturing for the systematic designing that focuses on minimizing the waste in the manufacturing or production with the constant productivity of the operation. Lean manufacturing was rooted from Toyota Production system a Japanese manufacturing company that works on the approach of minimizing the non-value-added activities and making the production lean.