Mark the correct alternative in the following:
The least number of times a fair coin must be tossed so that the probability of getting at least one head is at least 0.8, is
Given:
P(atleast 1 head) = 0.8
n=?
p(H)=p(T) = 1/2
Required probability = p= 1-
P0.8
For n= 2
For n=3
So, n=3