Question

Find the probability of obtaining exactly one tail when flipping nine coins. Express your as fraction terms on a rounded the nearest millionth

Answer 1

Answer:0.017578

Explanation:

Given

Nine coins are flipped

So the probability of getting a tail is
`(1)/(2)`

Because on flipping a coin could either yield Head or tail

so getting a tail on nine trails is
`(1)/(2^9)`

but this tail can come on first coin or second or third ....

So there are 9 possible ways

So probability of getting a tail on flipping nine coin is
`9* (1)/(2^9)`

`=(9)/(2^9)=0.017578`