A production facility contains two machines that are used to rework items that are initially defective. Let 8. A x be the number of hours that the first machine is in use, and let Y be the number of hours that the second machine is in use, on a randomly chosen day. Assume that X and Y have joint probability density function given by x2 y 2) 0 x 1 and 0 y 1 f(x) otherwise a. What is the probability that both machines are in operation for more than half an hour? b. Find the marginal probability density functions f (r) and fr (y). c. Are X and Y independent? Explain.

c

step-by-step explanation:

it isn't d, because the interquartile range is from 27-57. and the interquartile range is basically half the data, it's pretty obvious.

it isn't b, because like i said earlier, the interquartile range is from 27-57. 57-27 is 30. the real range has to be longer

not a either. although it looks like it, 3/4 of the data is not greater than 27. but if c is wrong than this should be correct

the correct answer is c, because 13 is the point in which the plot starts

if this is really you s much. i only have 3 points left and i have 2 questions to ask

360/29

step-by-step explanation:

i think the answer would be c