If X~B(8, .4)
What is the probability that P(X=12)
The probability mass function (PMF) of the binomial distribution is given by:
P(X=k) = (n choose k) * p^k * (1-p)^(n-k)
where n is the number of trials, k is the number of successful outcomes, and p is the probability of success on each trial.
In this case, n=8, p=0.4, and we want to find P(X=12). Since X represents the number of successful outcomes and it is not possible to have more successful outcomes than the number of trials, P(X=12) is equal to 0.
Therefore, P(X=12) = 0.