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A system contains 20 identical and critical components that will be replaced on failure (renewal process). As a result, a constant failure rate for the system will be observed. If a design life of 10 yr with a reliability of 0.99 is required, what should the system MTTF and median time to failure be? If each component has a CFR, what will the component MTTF and median time to failure be?
Carbon composition resistors with mean resistance 560 O and coefficient of variation 10% are produced by a factory. They are sampled each hour in the quality control lab. What sample size would be required so that there is 95% probability that the me..
estimate the size of the bear population on the keweenaw peninsula, conservationists captured, tagged, and released 50 bears. One year later a random sample of 100 bears included only tagged bears. What is the conservationists estimates of the siz..
Consider y''+9y=t^2(cos(3t)+4sin(3t)). This has homogeneous solution C1cos(3t)+C2sin(3t). Use method of undetermined coefficient to find a particular solution.
calculate area of a square a square picture is mounted in a frame 1 cm wide. the area of the picture is 2/3 of the total area. find the length of a side of the picture.
A trough is 15 ft long and 4 ft across the top . Its ends are isosceles triangles with height 3 ft. Water runs into the trough at the rate of 2.5 ft3/min. How fast is the water level rising when it is 2.11 ft deep? Give your answer correct to 3 de..
What will the value of the investment be after 12 years? If the deposits were made at the beginning of each period, what would the value of the deposits be after 12 years?
1. for a certain suvnbspnbsp mx -.015x2 1.31x - 7.3 30 le x le 60 represents the mpg obtained at a speed of x mph.
Draw an acute scalene triangle. Label the vertices A, B,C on the interior of each angle. Construct a segment congruent to line segment AC. Label the endpoints D and E.
Estimate with 95% confidence the decrease in percentage support between now and 6 months ago. What are the hypotheses?
the following table represents the estimated green power sales by renewable energy source in 2008sourcepercentage
Random Variables : Probability, Mean and Variance, Let the continuous r.v.X denote the weight (in pounds) of a package. The range of weight of the package is between 45 and 60 pounds.
Estimate the true proportion of all Americans who are in favor of gun control legislation using a 95% confidence interval. INTERPRET the answer.
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