Let y1, . . , yn be random variables with var(yi) = σ 2 and cov(yi , yj ) = rhoσ2 . the variance covariance matrix is of the form (a − b)i + bj, where a = 1, b = rho, j = 110 . therefore, in our model σ = σ 2 [(1 − rho)i + rhoj]. the inverse of this special matrix can be obtained as follows: σ−1 =

is there any photos or whatever?

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation:

for future students the answer is b

hope i

-lavira: )