Mathematics, 28.02.2020 22:46, larkinc2946
One hundred items are simultaneously put on a life test. Suppose the lifetimes of the individual items are independent exponential random variables with mean 200 hours. The test will end when there have been a total of 5 failures. If T is the time at which the test ends, find E[T] and Var(T).
Answers: 2
Mathematics, 21.06.2019 18:00, sophiamoser
Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?
Answers: 1
Mathematics, 21.06.2019 23:00, ronaldotheexplorer12
The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?
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Mathematics, 21.06.2019 23:30, jlopez113
The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.
Answers: 3
One hundred items are simultaneously put on a life test. Suppose the lifetimes of the individual ite...
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