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# The independent random variables X and Y are defined by the following probability distribution tables. X 1 3 6 Y 2 3 5 7 P(X) .1 P(Y) .4 Determine...

The independent random variables X and Y are defined by the following probability distribution tables.

X

1

3

6

Y

2

3

5

7

P(X)

.6

.3

.1

P(Y)

.1

.2

.3

.4

Determine the standard deviation of 4X - 5Y.