The data in file XR20062 represent the number of anonymous tips phoned in during each of 50 consecutive days to a local law enforcement hotline. Use your statistical software in generating an appropriate control chart for these data and diagnosing unusual conditions and patterns. Have the diagnostics cast any doubt on whether the process is in control? If so, in what way(s)?
Answer to relevant QuestionsFor each of the following, indicate whether the appropriate variable would be qualitative or quantitative. If you identify the variable as quantitative, indicate whether it would be discrete or continuous. a. Whether you own ...The Acme School of Lock smiting has been accredited for the past 15 years. Discus show this information might be interpreted as a a. qualitative variable. b. quantitative variable. A process has generated the output (in centimeters) listed in file XR20063. a. For a series of samples, each with n = 4, construct and interpret the x-bar and range charts for this process. Does it appear to be in ...A process is in control and the results from a series of samples show the overall mean and standard deviation of all the units sampled to be x-double bar = 21.4500 inches and s = 0.0969 inches. The upper and lower ...Telemarketers for a mail-order firm are assigned to make a total of 200 calls each day, then record the number of potential customers who are interested in receiving a catalog and first-order discount coupon in the mail. For ...
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