Time (in seconds) to serve an early-morning customer at a fast-food restaurant is normally distributed. Set up a control chart for the mean serving time, assuming that serving times were sampled in random subgroups of 4 customers.
Answer to relevant QuestionsTo print 8.5 × 5.5 note pads, a copy shop uses standard 8.5 × 11 paper, glues the long edge, then cuts the pads in half so that the pad width is 5.5 inches. However, there is variation in the cutting process. Set up a ...Create control limits for a p chart for a process with π = .90 and subgroup size n = .40. Is it safe to assume normality? Explain. Define three quality metrics that might be used to describe quality and performance in the following consumer products: (a) Your personal vehicle (e.g., car, SUV, truck, bicycle, motorcycle); (b) The printer on your ...17.48 Refer to the bolt strength problem 17.47. Assume μ = σ 6,050 and 5 100. Use the following 24 individual bolt strength observations to answer the questions posed. (a) Prepare a histogram and/or normal probability ...Refer to the Wheat Chex problem 17.56 with μ = 465 and σ = 3. During production, samples of three boxes are weighed every 5 minutes. (a) Find the upper and lower control limit for the x chart. (b) Plot the following 20 ...
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