SOLUTION: a. What is the probability of tossing 3 heads in 4 coins tossed ? b. Given that the first toss is a Head, what is the probability of tossing 3 heads in 4 coins tossed ? c. Sh

Algebra ->  Permutations -> SOLUTION: a. What is the probability of tossing 3 heads in 4 coins tossed ? b. Given that the first toss is a Head, what is the probability of tossing 3 heads in 4 coins tossed ? c. Sh      Log On


   

Question 829816: a. What is the probability of tossing 3 heads in 4 coins tossed ?
b. Given that the first toss is a Head, what is the probability of tossing 3 heads in 4 coins tossed ?
c. Show how the multiplication rule for probaility holds ?
Answer by reviewermath(1029) About Me  (Show Source):
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a. What is the probability of tossing 3 heads in 4 coins tossed ?
probability = %28matrix%282%2C1%2C4%2C3%29%29%281%2F2%29%5E4+=+highlight%281%2F4%29

b. Given that the first toss is a Head, what is the probability of tossing 3 heads in 4 coins tossed ?
probability = %28matrix%282%2C1%2C3%2C2%29%29%281%2F2%29%5E3+=+highlight%283%2F8%29
c. Show how the multiplication rule for probability holds ?
If A and B are independent events, then P(A ∩ B) = P(A)×P(B).