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Armco, a manufacturer of traffic light systems, found that under accelerated-life tests, 95 percent of the newly developed systems lasted 3 years before failing to change signals properly.
a. If a city purchased four of these systems, what is the probability all four systems would operate properly for at least 3 years?
b. Which rule of probability does this illustrate?
c. Using letters to represent the four systems, write an equation to show how you arrived at the answer to part (a).
A Company produces candy on a production line. When operating properly, the production process will produce an average of u=140 pounds of candy per hour with a standard deviation of o=20 pounds of candy per hour.
Health Outcome of Interest
A real emergency situation is a rare event, with a probability 0.004. Given that the alarm has just sounded, what is the probability that a real emergency situation exists?
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at most restaurants the more food you order the more money you have to pay. there are however many instances where you
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cell phone company offers two plans to its subscribers. at the time new subscribers sign up they are asked to provide
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Find a 90% confidence interval for the population mean of annual growth (of those trees with an initial size of 2.41-2.60 centimeters).
Develop a scatter diagram for the following sample data. How would you describe the relationship between the values?
Create the corresponding decision tree and make recommendations.
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