Using Binomial Distribution to Find the Probability of Two of the Same evnts ocurring

15 Views Asked by At

I am doing a Binomial distribution question, in which I have been asked to find the probabability of the same events happening. I know that the probability of the event is 1/3, the number of trials is 20. I have been asked to find the probability of two students guessing the answers to 20 questions and getting over 10 questions right. I have been given the answer as: 0.001414, but I can't figure out how to get to the answer.