Question

Find P(B). (Give your answer correct to two decimal places.)
A and B are independent events,
P(A) = 0.59 and P(A and B) = 0.25

Answer 1

I worked this one 0.25/0.59 and got the answer of .42372. Could not find the formula to see if this one you added, multiplied, or subtracted the way it was written.

Answer 2

As you know, for independent events,
P(A&B) = P(A)*P(B)
so,
.25 = .59*P(B)
P(B) = .25/.59 = 0.42

So, you are correct. Surely the formulas presented clearly state whether to add, subtract, etc...

Answer 3

I kept trying at first to one that said A or B not and then it would tell me it was wrong, so I thought I was using the wrong ones. Thank you