Question: Given independent random variables, X and Y, with means and standard deviations as shown, find the mean and standard deviation of each of the variables

Given independent random variables, X and Y, with means and standard deviations as shown, find the mean and standard deviation of each of the variables in parts a to d.
a) X €“ 20
b) 0.5T
c) X + Y
d) X-Y

Mean SD 80 12 3 12

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