Mathematics, 07.10.2019 16:30 he0gaubong
Suppose that x is a random variable with mean 30 and standard deviation 4. also suppose that y is a random variable with mean 50 and standard deviation of 8. assume that the correlation between x and y is zero. find the variance and the standard deviation of the random variable z for each of the following cases. show work.
(a) z = 35 -10x
(b)z = 12x - 5
(c) z = x +y
(d) z = x -y
(e) z = -2x + 2y
Answers: 2
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Darragh has a golden eagle coin in his collection with a mass of 13.551\,\text{g}13.551g. an uncirculated golden eagle coin has a mass of 13.714\,\text{g}13.714g.
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