1. The problem statement, all variables and given/known data I've uploaded a picture of the question. I need help in identifying the correct number of trials, probability of success and the X value(number of successes) 2. Relevant equations i'm using the binomial distribution function on the calculator but i've attached the formula just in case 3. The attempt at a solution I used n=7, p=7/15 and X=7 which yields me a probability of 0.00482 which is incorrect. The correct answer is 0.000155 but not sure how.