Given independent random variables with means and standard deviations as shown, find the mean and standard deviation of the random variable 3X-Y. X Y Mean 95 88 OA Pax-Y 197, 03x-y = 20.25 OB. Pax-Y 197,03x-y = 57.43 OC. Pax-y=7,0ax-y = 40.00 OD. Pax-Y 197,03x-y = 40.00 OE. _ 373. g 57 43 SD 19 7

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