The covariance in expected value notation is Cov(X,Y)= E[(X - x)(Y-Hy)]. a. Show that this is equivalent to E(XY) - E(X)E(Y). b. Using the result from part (a) above, if X and Y are independent, what does this imply about the E(XY)?

A: The matrix is given byTo determine: The inverse of the given matrix.Formula used:

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A: 1.3,   -3.5,   -5.4 ,   6.3,  -7.6,  9.2Sample of size(n)=6

A: Sample Size,n = 12Sample Mean,x̄ = 577.50standard deviation,s = 217.00

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