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A machine with two components is subject to a series of shocks that occur deterministically at the beginning of each day. When the machine is working, a shock can cause failure of component 1 alone with probability 0.03, component 2 alone with probability 0.03, both components with probability 0.04, or no failures with probability 0.9. When a failure occurs, the machine is shut down and no more failures occur until the machine is repaired. The repair time in days of component i (i = 1,2), is a geometric random variable with parameter ri, with r1 = 0.85 and r2 = 0.8. Assume that there is a single repair person and all repair times are independent. If both components fail simultaneously, the repair person repairs component one first, followed by component two.
If the machine is up at the beginning of Monday, what is the distribution over the possible states at the beginning of Thursday?
a. Why researchers are interested in describing measures of the center and measures of variation of a data set?
What are the implications of your answers to parts a and b? Would it be appropriate to rank the apartments in terms of distance using the proportional-scoring technique?
A dietitian investigated whether apples washed in hot water or in cold water turned brown at different rates when exposed to air. She took 13 random apples and cut each in half.
the normality assumption states that the population of x and y scores form a bivariate two variable normal distribution
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitude, and study habits of college students.
Suppose that 10% of all manufactured items produced by a certain process are nonconforming/defective and will be scrapped. A quality control manager
Consider an ideal gas having initial pressure and volume p1 , V1 . In terms of p1 , V1 , and y , write down an expression for the variation of p with V during
Given your experience as an organizational consultant, you have a client with a telephone company who has requested that you help diagnose
given independent random variables with the means and standard deviations below find the mean and standard deviation of
Use the Wilcoxon signed-rank test with a = 0.01 to determine whether there is any evidence that the median APR on student credit cards is less then 15.06.
What is the difference between an intermediate appellate court and a high appellate court? Are they referred to by other names?
At the .05 level, can we conclude-that women think men are less kind, gentle, and thoughtful in 2000 compared with 1990?
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