During winter it rains on average 18 / 30 days. Five winter days are selected at random. Find correct to four decimal places, the probability that
a) the first two days chosen will be fine and the remainder wet 0.0124
b) more rainy days than fine days have been chosen 0.7102

Question

During winter it rains on average 18 / 30 days. Five winter days are selected at random. Find correct to four decimal places, the probability that
a) the first two days chosen will be fine and the remainder wet 0.0124
b) more rainy days than fine days have been chosen 0.7102

anonymous · Answer

the answers are for a) 0.0124, and b) 0.7102, but i have no idea how to get them :(

anonymous · Answer

if it  helps, this is in the binomial probability section of the book

perl · Answer

ok one moment , brb

anonymous · Answer

ok ty

perl · Answer

this website got the same answer as me https://answers.yahoo.com/question/index?qid=20100120174729AAIzMaL

perl · Answer

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