An experiment consists of selecting a ball from a bag and spinning a coin. The bag contains 5 red balls and 7 blue balls. A ball is selected at random from the bag, its color is noted and then the ball is returned to the bag. When a red ball is selected, a biased coin with probability 2/3 of landing heads is spun. When a blue ball is selected a fair coin is spun. Find the probability that she obtains a head.

A 0.569

B 0.24

C 0.965

D 0.659

Solution

Correct Answer: Option A

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