The coin flip was a prob of 1/2
so
(1/2)(x) = 12/40)
x = 24/40
= 12/20, I wanted 20 at the bottom since there are 20 marbles
so something 12 out of 20 ??
how about 3 white or 9 blacks
Pierre's question:
What is the probability of head and not a green marble, or
What is the probability of tails and not a green marble, or
what is the probability of tails and either a black or a white marble, or
(there is one more)
Pierre asks Sherry a question involving the theoretical probability of a compound event in which you flip a coin and draw a marble from a bag of marbles. The bag of marbles contains 3 white marbles, 8 green marbles, and 9 black marbles. Sherry's answer, which is correct, is 12/40. What was Pierre's question?
THANK YOU!!
1 answer
1 answer