Let the joint pdf of x and y be f (x, y) = 12e−4x−3 y , x > 0, y > 0. a. find the marginal pdf ’s of x and y. b. are x and y independent? c. find the conditional pdf f1(x|y). d. find the marginal cdf ’s of x and y. e. find p(1 < y < 3). f. find p(1 < y < 3|x = 3). g. find p(x > 2, 1 < y < 3).

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0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076