Question 19 (1 point) 1) Listen ? How do I calculate the probability of having 4 successes or less in 10 trials, when the probability of success is 0.25? qbinom(4, size=10, prob=0.25) pbinom(4, size=10, prob=0.25) pbinom(10, size=4, prob=0.25) Question 20 (1 point) Listen How do I calculate the probability of having exactly one success in 25 trials, when the probability of success is 0.005? rbinom(1, 25, 0.005) dbinom(1, 25, 0.005) pbinom(1, 25, 0.005) Question 18 (1 point) 1) Listen ? What does the following code calculate? pbinom(27, size=100, prob=0.25) Probability of event (X