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George flips an unfair coin 7 times. The coin has a probability of 1/4 coming up heads and a probability of 3/4 coming up tails. What is the probability that he flips exactly 2 tails?

 Feb 6, 2019
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P(T)=3/4 =0.75     find P of 2tails  in 7 flips

 

 

7C2 * (0.75)^2 * (0.25)^5

 Feb 6, 2019

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