Let A and B be two possible events of an experiment, such that P(A) = 0.4, P(B) = K and P(AUB) = 0.7
(a) For what value of K are A and B mutually exclusive?
(b) For what value of K are A and B independent?
If F and F he the events​

you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.