Mathematics, 16.12.2019 21:31 dearydn22
In the notation below, x is the random variable, c is a constant, and v refers to the variance.
which of the following laws of variance is not true?
-v(c) = 0
-v(cx) = c2 v(x)
-v(x + c) = v(x) + c
-none of these choices.
Answers: 1
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White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.
Answers: 2
In the notation below, x is the random variable, c is a constant, and v refers to the variance.
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