1.

If the variance of a random variable X is 9, the S.D. of the random variables −2X+5,3X−6 and −4X−3 is a,b and c respectively. Then which of the following statement(s) is/are correct ?

Answer»

If the variance of a random variable X is 9, the S.D. of the random variables 2X+5,3X6 and 4X3 is a,b and c respectively. Then which of the following statement(s) is/are correct ?



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