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Common causes, special causes. In Exercise, you described a process that you know well. What are some sources of common cause variation in this process? What are some special causes that might at times drive the process out of control?
Describe a process. Choose a process that you know well. If you lack experience with actual business or manufacturing processes, choose a personal process such as ordering something over the Internet, paying a bill online, or recording a TV show on a DVR. Make a flowchart of the process. Make a cause-andeffect diagram that presents the factors that lead to successful completion of the process.
A pump manufacturer knows from past records that, in general, the probability of a certain specialty pump working continuously for fewer than 2 years is 0.3; the probability that it will work continuously for 2 to 5 years is 0.5, and the probabili..
According to an IRS study, it takes an average of 330 minutes for taxpayers to prepare, copy, and electronically file a 1040 tax form. A consumer watchdog agency selects a random sample of 40 taxpayers and finds the standard deviation of the time ..
Estimated proportion is within 2.5 percentage points of the true proportion. A previous poll suggests that the proportion is 85%. How large must your sample be?
Explain why comparing children whose parents chose a Montessori school with children of other parents would not show whether Montessori schools perform better than other programs?
1. using statcrunch calculate the chi-square statistic and degrees of freedom for the following set of data for 300
a department store is running a promotion one saturday by giving out coupons for 10 of free merchandise. based on the
A telephone manufacturer wants its telescope to have standard deviation in resolution to be significantly below 2 when focusing on object 500 light-years away.
Which activity could probabilities be computed using a Binomial Distribution? a. Flipping a coin a 100 times
according to a study by the american pet food dealers association 63 percent of u.s. households own pets. a report is
if the z-score of the standirez test statistic is z.529 then is there significant difference between the defect rates
the following regression equation y-bar 53.9 8.4x relates x the number of hours a student studies for a test and y
It is important for qualitative data to be analyzed and the themes that emerge identified so that the data can be presented in a way that is understandable.
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