A doesn’t equal 100 so probs b
<span>Yo se la respuesta. será c
Good luck and have a nice day!</span>
For what? Sorry is there an attachment?
Success = p
failure = (1-p)
is the correct first step.
To find the probability of at least one success, P(X>0), it is much easier to first calculate the probability of P(X=0)=NO success. Then the complement of
P(X=0)'=1-P(X=0) = P(>0) = probability of at least one success.
By the multiplication rule,
P(X=0)=(1-p)^9
or the binomial distribution
P(X=0)=C(9,0)(p^0)(1-p)^9=1*1*(1-p)^9=(1-p)^9
So the probability of at least one success = 1-P(X=0)
=1-(1-p)^9
Y=4.56 I hope you like this totally correct answer