Answer to Question #261698 in Statistics and Probability for A.A

Question #261698

suppose we have two hats one has 4 red balls and 6 green balls, the other has 6 red and 4 green. we toss a fair coin, if heads, pick a random ball from the first hat, if tails from the second. What is the probability of getting a red ball.


1
Expert's answer
2021-11-08T12:04:46-0500

Solution:

P(Red)=P(RedH).P(H)+P(RedT).P(T)=410.12+610.12=12P(Red)=P(Red|H).P(H)+P(Red|T).P(T) \\=\dfrac{4}{10}.\dfrac{1}{2}+\dfrac{6}{10}.\dfrac{1}{2} \\=\dfrac{1}{2}


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