Mathematics, 30.11.2019 06:31 ktenz
Let x, y , z be three random variables which satisfy the following conditions: var(x) = 4, var(y ) = 9, var(z) = 16. cov(x, y ) = −2, cov(z, x) = 3, and y and z are independent. find: (a) cov(x + 2y, y − z). (b) var(3x − y ). (c) var(x + y + z)
Answers: 2
Mathematics, 21.06.2019 21:30
Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?
Answers: 1
Mathematics, 22.06.2019 00:00
If a suspect is in possession of 20 grams of cocaine how many ounces does he possess what will the charge be
Answers: 2
Mathematics, 22.06.2019 00:30
Bo is buying a board game that usually costs bb dollars. the game is on sale, and the price has been reduced by 18\%18%. which of the following expressions could represent how much bo pays for the game? choose 2 answers: choose 2 answers: (choice a) a 0.82b0.82b (choice b) b 1.18b1.18b (choice c) c b-0.18b−0.18 (choice d) d b-18b−18 (choice e) e b-0.18bb−0.18b
Answers: 2
Let x, y , z be three random variables which satisfy the following conditions: var(x) = 4, var(y )...
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