Events a and b are independent. find the missing probability.
p(b)= 9/20 , p(a and b) = 9/100, p(a)= ?
answer in decimal form rounded to one decimal place

Step-by-step explanation:

events A and B are independent:

P(A and B) = P(A)×P(B)

9/100= P(A)×9/20

P(A) = (9/100)/(9/20)

P(A) = (9/100) ×(20/9) =180/900

P(A) = 0.2

y/x of point b= y/x of point a

step-by-step explanation:

(i got the same question, this was the correct answer.)