Discuss the relationship between a control chart and statistical hypothesis testing.
Answer to relevant QuestionsWhat is meant by the statement that a process is in a state of statistical control? Consider the control charts shown here. Does the pattern appear random? Consider the chemical process yield data in Exercise 4.12. Construct a stem-and-leaf plot and a histogram. Which display provides more information about the process? In exercise Continuation of Exercise 4.20. Reconsider the power supply manufacturing process in Exercise 4.20. Suppose we wanted to improve the process. Can shifting the mean reduce the number of nonconforming units produced? How much ...Waiting times for customers in an airline reservation system are (in seconds) 953,955, 948, 951,957,949, 954, 950, 959. a. Calculate the sample average. b. Calculate the sample standard deviation.
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