Suppose USAir accounts for 20% of all U. S domestic flights. As of mid-1194, USAir was involved in four of the previous seven major disasters. “That’s enough to begin getting suspicious but not enough to hang them,” said Dr. Brad Efton in The New York Times (September 11, 1994, Sec 4, p. 4). Using a binomial distribution, comment on Dr. Efton’s remark. I found the answer on a website called (chegg) but I'm not old enough to buy the answer SMH

As usual I'll mark branliest so pls help me :)