Question

If variance of a random variable x is 23, then what is the variance of 2x+10?
(a) 56
(b) 33
(c) 46
(d) 92
please give detailed answers i will rate as brainist​

Answer 1

● Solution :

➡️ X = 23

➡️ By transposition --> 2(23) +10

➡️ 46 +10 = 56 i.e, 2(23) = 46

➡️ Hence, the answer is option A : 56

Hope this helps you ...●

Answer 2

ANSWER :

$v \: ar(x) \: = \: 23 \\ v \: ar \: (2x + 10) = (2) {}^{2} v \: ar \: (x) \\ v \: ar \: (2x + 10) = 4 \times 23 \\ v \: ar \: (2x + 10) = 92$

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