1. A jar contains 100 gummy bears: 50 ordinary candies, and 50
cannabis edibles. Of the...
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1. A jar contains 100 gummy bears: 50 ordinary candies, and 50cannabis edibles. Of the ordinary candies, 40 are red and 10 aregreen. Of the cannabis edibles, 20 are red, and 30 are green. Agummy bear is drawn at random from the jar, in such a way that eachgummy bear is equally likely to be the one drawn. What is theprobability that the drawn gummy bear is a cannabis edible,conditional on it being red?
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P(cannabis edible | being red) = P(cannabis edible and being
red) / P(being red)
                                               Â
= (20/100) / ((20+40)/100)
                                               Â
= 20/60
                                               Â
= 1/3 or 0.3333
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