(Ross 6.21) Let fX, Y px, yq " # 24xy 0 ď x ď 1, 0 ď y ď 1, 0 ď x ` y ď 1 0 otherwise (a) Show that fX, Y is a joint probability density function. (b) Find the marginal function of Y . (c) Find ErXs. (d) Find ErY s.

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}

if you was gonna solve for a, a is a   < -12

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation: