Researchers conducted a study to determine whether there were significant differences in graduation rates between medical students admitted through special programs and medical students admitted through the regular admissions criteria. it was found that the graduation rate was 93% for the medical students admitted through special programs in all medical schools. if 10 of the students admitted through special programs are randomly selected, find the probability that at least 9 of them graduated. my math was p(9)+p(10)= 0.387+0.348=0.735 i keep getting it wrong and am at a total loss

Cdnsksmans

Use binomial distribution to find the answer.

P(9) = 0.3643

P (10) = 0.4840

sum of both is 0.483

edit, sum of both is 0.8483... i miss out the 8 the first time. typed too fast.