SOLUTION: Suppose that 19% of brand A bicycle tubes go flat after 1 year, and 33% of brand B bicycle tubes go flat after 1 year. Find the probabilities of the following event occurring. a)

Question 1140531: Suppose that 19% of brand A bicycle tubes go flat after 1 year, and 33% of brand B bicycle tubes go flat after 1 year. Find the probabilities of the following event occurring.
a) If you check 24 Brand B tubes after one year, what is the probability of 10 NOT going flat?

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
67% of Brand B tubes do not go flat
probability of 10 out of 24 is 24C100.67^10*0.33^14=0.0065. This makes intuitive sense, because the expected value is about 16 and the sd is about 2.3
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