a hat contains 4 marbles one red one green one blue and one yellow. two marbles are sletected at ramdon without replacment. what is the probablity that one is not yellow
Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.
Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Let's say that during the first drawing you do NOT pull out a yellow.
That probablity is 3/4 then that marble is tossed out.
Let's say that during the second drawing you DO pull out yellow..
That probablity is 1/3 because there is one yellow and only three marbles left.
so 3/4 * 1/3 = 1/4
I think this is correct.
Thanks for the reply
The probability that one is not yellow = 1 - probability that one is yellow
To calculate the probability that one is yellow = either the first one is yellow or the second one is yellow
= (1/4 * 1) + (3/4 * 1/3) = 1/4 +3/12 = 1/2.
The probability that neither is yellow = 1-1/2 = 1/2