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If \(X\) is a random variable such that \(\sigma(X)=2.6\), then \(\sigma(1-4 X)\) is equal to,
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Dec 11, 2021
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Dec 27, 2021
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kritika
If \(X\) is a random variable such that \(\sigma(X)=2.6\), then \(\sigma(1-4 X)\) is equal to,
(A) \(7.8\)
(B) \(-10.4\)
(C) 13
(D) \(10.4\)
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Dec 27, 2021
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Ans: (D)
Hint: \(\sigma(a+b x)=|b| \sigma(x)\)
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