sat2
问题描述：
sat2
if 10 coins are to be flipped and the first 5 all come up heads,what is the probability that exactly 3 more heads will be flipped?
答
Answer:
This can be solved according to the Bernoulli binomial distribution:
C(5,3) x (1/2)^3 x [1-(1/2)]^(5-3)
= 10 x (1/2)^5
= 10/32
= 5/16
= 0.3125what is the Bernoulli binomial distribution?Answer: You can refer to a book about probability and statistics. Alternatively, you can simply Google "binomial distribution" for a quick answer.