Late xandy be i. i.d n(0,1), and let's be a random sign (1 or−1, with equal probabilities) independent of (x, y).
(a) determine whether or not (x, y,x+y) is multivariate normal.
(b) determine whether or not (x, y,sx+sy) is multivariate normal.
(c) determine whether or not (sx, sy) is multivariate normal.

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

kekdkdkccc

so

step-by-step explanation:

kekdkckcldlx

a: inscribed angles

step-by-step explanation:

i reviewed this question with a peer and teacher, seems to be correct, me later