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Q1) A software system is designed so that after every hour of normal operation, it stops and relaunches from its initial state. This process is known software rejuvenation. Suppose that mean time to failure for software is measured to be 10 hours and mean time to repair is 5 minutes. Repair means restoring software to the operating condition by relaunching it from its initial state.
a) Determine the reliability of system after 4 successful hours of execution and four successful rejuvenations?
b) Find the probability of failure of system for any 4 hours of operation?
c) What is the availability of system where R(t) = e -λt , where R is reliability, c is reciprocal of mean time to failure, and t is execution time. Note that ex is approximately (1 + x) for small x. Using R(t) = e -λt
Compute the sample variance and the sample standard deviation for these data (to 2 decimals).
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Using the dataset, produce a graph of per capita GDP for Argentina, China, and Canada from 1965 to 1995. Is inequality between these countries increasing?
MATH1550H: Assignment: Question: Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form
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Reading highway signs is not always easy, especially if your vision is imperfect. Vision in general tends to deteriorate with age. Two researchers conducted a study to determine if the distance at which a standard highway sign could be recognized ..
Take a confidence interval for the difference in the average of renting between the first andthird hotel.
The amount ($1.00, $5.00, $10.00, $25.00, or $50.00) promised to each person was determined by randomization. For each person who was sent one of the surveys, The value of the X2 test statistic for testing the hypothesis
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One characteristic of billiard balls is their elasticity - the bounce they get when striking one another. A manufacturer of billiard balls is testing three additives to the basic plastic.
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