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Statistical Process Control
You own and operate a restaurant and you decided to track meal temperatures using statistical process control.
Given:
Complete this data table:
Calculate the Range Chart Limits and the X-Bar Chart Limits (LCL, UCL, Center)
And
Draw your X-Bar and R Charts and describe what the data is telling you?
You've two separate sets of data. From one set you calculate the standard error to be 500. From the other set, the standard error was 5.
Two researchers are both interested in the relationship between caffeine consumption and activity level for elementary school children. Each obtains a sample of n = 20 children.
This distribution is positively skewed. The standard deviation of the population is not known.
What is the expected number of customers that will have to wait more than 6 hours?
3% from excise taxes and 5% other. If a revenue source is selected at random, what is the probability that it comes from individual or corporate income taxes?
Four research participants take a test of mannual dexterity (high scores mean better dexterity) and anxiety test (high scores mean more anxiety). Scores are as follows:
Twelve case of leukemia are reported in people living in a particular census tract over a five year period. Is this number of cases abnormal if only 6.7 cases would be expected based on national cance-incidence rates?
On what method is the Excel based calculator that you have provided based on (Exact, Score, Wald, Adjusted Wald). Also, what method is the calculation in Minitab based on?
What are the primary advantages and disadvantages of employing sampling in this application?
Conduct the test at the 0.05 level of significance whether the modification actually increased the life of the AAA battery. What was their decision rule?
Illustrate what was the lowest score earned on the exam. Explain how many students scored within 3 standard deviations of the mean.
10.3% of students in statistics actually take the course because they want to. If two students are selected at random, find the probability that both took statistics because they wanted to.
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